diff --git a/demos/path-gap-clip.html b/demos/path-gap-clip.html
index 4e725c94..cc1d922b 100644
--- a/demos/path-gap-clip.html
+++ b/demos/path-gap-clip.html
@@ -114,40 +114,6 @@
 		</script>
 
 		<script>
-			const opts9 = {
-				title: "Gaps in stepped after",
-				width: 800,
-				height: 400,
-				scales: {
-					x: {
-						time: false,
-					}
-				},
-				series: [
-					{},
-					{
-						label: "step after",
-						stroke: "blue",
-						fill: "rgba(0,0,255,0.3)",
-						width: 2,
-						paths: uPlot.paths.stepped({
-							align: 1,
-						//	ascDesc: true,
-						}),
-					},
-					{
-						label: "linear",
-						stroke: "red",
-						width: 2,
-					},
-					{
-						label: "spline",
-						stroke: "orange",
-						width: 2,
-						paths: uPlot.paths.spline(),
-					},
-				],
-			};
 
 			let vals9 = [null,null,null,1,1,1,1,1,null,null,2,2,null,1,undefined,undefined,null,1,1,1,1,2,2,2,undefined,undefined];
 		//	let vals9 = [2,null,1,null,1,1];
@@ -158,12 +124,11 @@
 				vals9,
 				vals9.map((v, i) => v == null ? v : v + 0.1),
 				vals9.map((v, i) => v == null ? v : v + 0.2),
+				vals9.map((v, i) => v == null ? v : v + 0.3),
 			];
 
-			let u9 = new uPlot(opts9, data9, document.body);
-
-			const opts9_2 = {
-				title: "Gaps in stepped before",
+			const opts9 = {
+				title: "stepped1 vs stepped-1 vs linear vs spline",
 				width: 800,
 				height: 400,
 				scales: {
@@ -173,11 +138,23 @@
 				},
 				series: [
 					{},
+					{
+						label: "step after",
+						stroke: "green",
+						fill: "rgba(0,128,0,0.3)",
+						width: 2,
+						spanGaps: true,
+						paths: uPlot.paths.stepped({
+							align: 1,
+						//	ascDesc: true,
+						}),
+					},
 					{
 						label: "step before",
 						stroke: "red",
 						fill: "rgba(255,0,0,0.3)",
 						width: 2,
+						spanGaps: true,
 						paths: uPlot.paths.stepped({
 							align: -1,
 						//	ascDesc: true,
@@ -187,17 +164,24 @@
 						label: "linear",
 						stroke: "blue",
 						width: 2,
+						spanGaps: true,
 					},
 					{
 						label: "spline",
 						stroke: "orange",
 						width: 2,
+						spanGaps: true,
 						paths: uPlot.paths.spline(),
 					},
 				],
 			};
 
-			let u9_2 = new uPlot(opts9_2, data9, document.body);
+			let u9 = new uPlot(opts9, data9, document.body);
+			opts9.title = `Gaps in -> ${opts9.title}`
+			opts9.series.forEach(s => {
+				s.spanGaps = false
+			})
+			let u9_2 = new uPlot(opts9, data9, document.body);
 		</script>
 
 		<script>
@@ -247,7 +231,7 @@
 				]);
 
 				const opts = {
-					title: "Gaps in stepped after",
+					title: "Gaps in stepped -> insert after null",
 					width: 800,
 					height: 400,
 					scales: {
@@ -340,7 +324,7 @@
 				]);
 
 				const opts = {
-					title: "Gaps in stepped before",
+					title: "Gaps in stepped -> insert before null",
 					width: 800,
 					height: 400,
 					scales: {
@@ -355,14 +339,14 @@
 							stroke: "blue",
 							fill: "rgba(0,0,255,0.3)",
 							width: 2,
-							paths: uPlot.paths.stepped({ align: -1, alignGaps: -1 }),
+							paths: uPlot.paths.stepped({ align: 1, alignGaps: -1 }),
 						},
 						{
 							label: "[0..5]",
 							stroke: "red",
 							fill: "rgba(255,0,0,0.3)",
 							width: 2,
-							paths: uPlot.paths.stepped({ align: -1, alignGaps: -1 }),
+							paths: uPlot.paths.stepped({ align: 1, alignGaps: -1 }),
 						},
 						{
 							label: "dataset03",
diff --git a/dist/uPlot.cjs.js b/dist/uPlot.cjs.js
index 1ce71ef1..62a316c4 100644
--- a/dist/uPlot.cjs.js
+++ b/dist/uPlot.cjs.js
@@ -1688,13 +1688,21 @@ function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
 
 		for (let i = 0; i < gaps.length; i++) {
 			let g = gaps[i];
+			// begin gaps always at x=0
+			g[0] = Math.max(0, g[0]);
+			g[1] = Math.max(0, g[1]);
+
+			// do not ignore first gap if less then first Point on chart
+			if(i===0 && g[0] <= prevGapEnd){
+				prevGapEnd = g[1];
+			}
 
 			if (g[1] > g[0]) {
 				let w = g[0] - prevGapEnd;
 
 				w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
 
-				prevGapEnd = g[1];
+				prevGapEnd = Math.max(prevGapEnd, g[1]);
 			}
 		}
 
@@ -2004,7 +2012,7 @@ function stepped(opts) {
 	// whether to draw ascenders/descenders at null/gap bondaries
 	const ascDesc = ifNull(opts.ascDesc, false);
 
-	const alignGaps = ifNull(opts.alignGaps, 0);
+	const alignGaps = ifNull(opts.alignGaps, align);
 
 	return (u, seriesIdx, idx0, idx1) => {
 		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
@@ -2020,19 +2028,20 @@ function stepped(opts) {
 
 			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
 
-			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
-			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+			let lftIdx = align === -1 ? idx0 : nonNullIdx(dataY, idx0, idx1,  1);
+			let rgtIdx = align ===  1 ? idx1 : nonNullIdx(dataY, idx0, idx1, -1);
 
-			let prevYPos  = pixelForY(dataY[dir == 1 ? idx0 : idx1]);
-			let firstXPos = pixelForX(dataX[dir == 1 ? idx0 : idx1]);
+			let prevYPos  = pixelForY(dataY[dir == 1 ? lftIdx : rgtIdx]);
+			let firstXPos = pixelForX(dataX[dir == 1 ? lftIdx : rgtIdx]);
 			let prevXPos = firstXPos;
 
+			lineTo(stroke, firstXPos, yDim + yOff);
 			lineTo(stroke, firstXPos, prevYPos);
 
-			for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+			for (let i = dir == 1 ? lftIdx : rgtIdx; i >= lftIdx && i <= rgtIdx; i += dir) {
 				let yVal1 = dataY[i];
 
-				if (yVal1 == null)
+				if (yVal1 == null && i < rgtIdx)
 					continue;
 
 				let x1 = pixelForX(dataX[i]);
@@ -2040,15 +2049,22 @@ function stepped(opts) {
 
 				if (align == 1)
 					lineTo(stroke, x1, prevYPos);
-				else
-					lineTo(stroke, prevXPos, y1);
-
+				else {
+					if(yVal1 !== undefined){
+						lineTo(stroke, prevXPos, y1);
+					}else {
+						x1 = prevXPos;
+						y1 = prevYPos;
+					}
+				}
 				lineTo(stroke, x1, y1);
 
 				prevYPos = y1;
 				prevXPos = x1;
 			}
 
+			lineTo(stroke, prevXPos, yDim + yOff);
+
 			let [ bandFillDir, bandClipDir ] = bandFillClipDirs(u, seriesIdx);
 
 			if (series.fill != null || bandFillDir != 0) {
diff --git a/dist/uPlot.d.ts b/dist/uPlot.d.ts
index fcddb6ae..357ca054 100644
--- a/dist/uPlot.d.ts
+++ b/dist/uPlot.d.ts
@@ -212,11 +212,11 @@ declare namespace uPlot {
 		Vertical   = 1,
 	}
 
-	export type TypedArray = Int8Array | Uint8Array | Int16Array | Uint16Array | Int32Array | Uint32Array | Uint8ClampedArray | Float32Array | Float64Array;
+	export type serieData = (number | null | undefined)[]
 
 	export type AlignedData = [
-		xValues: number[] | TypedArray,
-		...yValues: ((number | null | undefined)[] | TypedArray)[],
+		xValues: number[],
+		...yValues: serieData[],
 	]
 
 	export interface DateNames {
@@ -558,6 +558,9 @@ declare namespace uPlot {
 
 		/** lock cursor on mouse click in plotting area */
 		lock?: boolean; // false
+
+		/** runtime - current lock of cursor in plotting area */
+		_lock?: boolean;
 	}
 
 	export namespace Scale {
@@ -642,7 +645,7 @@ declare namespace uPlot {
 		export interface SteppedPathBuilderOpts {
 			align?: -1 | 1; // 1
 
-			alignGaps?: -1 | 0 | 1; // 0
+			alignGaps?: -1 | 0 | 1; // align
 
 			// whether to draw ascenders/descenders at null/gap boundaries
 			ascDesc?: boolean; // false
@@ -722,9 +725,9 @@ declare namespace uPlot {
 			points?:  PointsPathBuilderFactory;
 		}
 
-		export type Stroke = CanvasRenderingContext2D['strokeStyle'] | ((self: uPlot, seriesIdx: number) => CanvasRenderingContext2D['strokeStyle']);
+		export type Stroke = CanvasRenderingContext2D['strokeStyle'] | (() => CanvasRenderingContext2D['strokeStyle']);
 
-		export type Fill = CanvasRenderingContext2D['fillStyle'] | ((self: uPlot, seriesIdx: number) => CanvasRenderingContext2D['fillStyle']);
+		export type Fill = CanvasRenderingContext2D['fillStyle'] | (() => CanvasRenderingContext2D['fillStyle']);
 
 		export type Cap = CanvasRenderingContext2D['lineCap'];
 
@@ -864,9 +867,15 @@ declare namespace uPlot {
 		/** line & legend color */
 		stroke?: Series.Stroke;
 
+		/** runtime - current line color */
+		_stroke?: string;
+
 		/** area fill & legend color */
 		fill?: Series.Fill;
 
+		/** runtime - current fill color */
+		_fill?: string;
+
 		/** area fill baseline (default: 0) */
 		fillTo?: Series.FillTo;
 
diff --git a/dist/uPlot.esm.js b/dist/uPlot.esm.js
index 5ca93cba..61fcb8ec 100644
--- a/dist/uPlot.esm.js
+++ b/dist/uPlot.esm.js
@@ -1686,13 +1686,21 @@ function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
 
 		for (let i = 0; i < gaps.length; i++) {
 			let g = gaps[i];
+			// begin gaps always at x=0
+			g[0] = Math.max(0, g[0]);
+			g[1] = Math.max(0, g[1]);
+
+			// do not ignore first gap if less then first Point on chart
+			if(i===0 && g[0] <= prevGapEnd){
+				prevGapEnd = g[1];
+			}
 
 			if (g[1] > g[0]) {
 				let w = g[0] - prevGapEnd;
 
 				w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
 
-				prevGapEnd = g[1];
+				prevGapEnd = Math.max(prevGapEnd, g[1]);
 			}
 		}
 
@@ -2002,7 +2010,7 @@ function stepped(opts) {
 	// whether to draw ascenders/descenders at null/gap bondaries
 	const ascDesc = ifNull(opts.ascDesc, false);
 
-	const alignGaps = ifNull(opts.alignGaps, 0);
+	const alignGaps = ifNull(opts.alignGaps, align);
 
 	return (u, seriesIdx, idx0, idx1) => {
 		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
@@ -2018,19 +2026,20 @@ function stepped(opts) {
 
 			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
 
-			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
-			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+			let lftIdx = align === -1 ? idx0 : nonNullIdx(dataY, idx0, idx1,  1);
+			let rgtIdx = align ===  1 ? idx1 : nonNullIdx(dataY, idx0, idx1, -1);
 
-			let prevYPos  = pixelForY(dataY[dir == 1 ? idx0 : idx1]);
-			let firstXPos = pixelForX(dataX[dir == 1 ? idx0 : idx1]);
+			let prevYPos  = pixelForY(dataY[dir == 1 ? lftIdx : rgtIdx]);
+			let firstXPos = pixelForX(dataX[dir == 1 ? lftIdx : rgtIdx]);
 			let prevXPos = firstXPos;
 
+			lineTo(stroke, firstXPos, yDim + yOff);
 			lineTo(stroke, firstXPos, prevYPos);
 
-			for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+			for (let i = dir == 1 ? lftIdx : rgtIdx; i >= lftIdx && i <= rgtIdx; i += dir) {
 				let yVal1 = dataY[i];
 
-				if (yVal1 == null)
+				if (yVal1 == null && i < rgtIdx)
 					continue;
 
 				let x1 = pixelForX(dataX[i]);
@@ -2038,15 +2047,22 @@ function stepped(opts) {
 
 				if (align == 1)
 					lineTo(stroke, x1, prevYPos);
-				else
-					lineTo(stroke, prevXPos, y1);
-
+				else {
+					if(yVal1 !== undefined){
+						lineTo(stroke, prevXPos, y1);
+					}else {
+						x1 = prevXPos;
+						y1 = prevYPos;
+					}
+				}
 				lineTo(stroke, x1, y1);
 
 				prevYPos = y1;
 				prevXPos = x1;
 			}
 
+			lineTo(stroke, prevXPos, yDim + yOff);
+
 			let [ bandFillDir, bandClipDir ] = bandFillClipDirs(u, seriesIdx);
 
 			if (series.fill != null || bandFillDir != 0) {
diff --git a/dist/uPlot.iife.js b/dist/uPlot.iife.js
index 5a03285d..9aa1d6cf 100644
--- a/dist/uPlot.iife.js
+++ b/dist/uPlot.iife.js
@@ -1689,13 +1689,21 @@ var uPlot = (function () {
 
 			for (let i = 0; i < gaps.length; i++) {
 				let g = gaps[i];
+				// begin gaps always at x=0
+				g[0] = Math.max(0, g[0]);
+				g[1] = Math.max(0, g[1]);
+
+				// do not ignore first gap if less then first Point on chart
+				if(i===0 && g[0] <= prevGapEnd){
+					prevGapEnd = g[1];
+				}
 
 				if (g[1] > g[0]) {
 					let w = g[0] - prevGapEnd;
 
 					w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
 
-					prevGapEnd = g[1];
+					prevGapEnd = Math.max(prevGapEnd, g[1]);
 				}
 			}
 
@@ -2005,7 +2013,7 @@ var uPlot = (function () {
 		// whether to draw ascenders/descenders at null/gap bondaries
 		const ascDesc = ifNull(opts.ascDesc, false);
 
-		const alignGaps = ifNull(opts.alignGaps, 0);
+		const alignGaps = ifNull(opts.alignGaps, align);
 
 		return (u, seriesIdx, idx0, idx1) => {
 			return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
@@ -2021,19 +2029,20 @@ var uPlot = (function () {
 
 				const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
 
-				idx0 = nonNullIdx(dataY, idx0, idx1,  1);
-				idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+				let lftIdx = align === -1 ? idx0 : nonNullIdx(dataY, idx0, idx1,  1);
+				let rgtIdx = align ===  1 ? idx1 : nonNullIdx(dataY, idx0, idx1, -1);
 
-				let prevYPos  = pixelForY(dataY[dir == 1 ? idx0 : idx1]);
-				let firstXPos = pixelForX(dataX[dir == 1 ? idx0 : idx1]);
+				let prevYPos  = pixelForY(dataY[dir == 1 ? lftIdx : rgtIdx]);
+				let firstXPos = pixelForX(dataX[dir == 1 ? lftIdx : rgtIdx]);
 				let prevXPos = firstXPos;
 
+				lineTo(stroke, firstXPos, yDim + yOff);
 				lineTo(stroke, firstXPos, prevYPos);
 
-				for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+				for (let i = dir == 1 ? lftIdx : rgtIdx; i >= lftIdx && i <= rgtIdx; i += dir) {
 					let yVal1 = dataY[i];
 
-					if (yVal1 == null)
+					if (yVal1 == null && i < rgtIdx)
 						continue;
 
 					let x1 = pixelForX(dataX[i]);
@@ -2041,15 +2050,22 @@ var uPlot = (function () {
 
 					if (align == 1)
 						lineTo(stroke, x1, prevYPos);
-					else
-						lineTo(stroke, prevXPos, y1);
-
+					else {
+						if(yVal1 !== undefined){
+							lineTo(stroke, prevXPos, y1);
+						}else {
+							x1 = prevXPos;
+							y1 = prevYPos;
+						}
+					}
 					lineTo(stroke, x1, y1);
 
 					prevYPos = y1;
 					prevXPos = x1;
 				}
 
+				lineTo(stroke, prevXPos, yDim + yOff);
+
 				let [ bandFillDir, bandClipDir ] = bandFillClipDirs(u, seriesIdx);
 
 				if (series.fill != null || bandFillDir != 0) {
diff --git a/dist/uPlot.iife.min.js b/dist/uPlot.iife.min.js
index a125a196..3c992573 100644
--- a/dist/uPlot.iife.min.js
+++ b/dist/uPlot.iife.min.js
@@ -1,2 +1,2 @@
 /*! https://github.com/leeoniya/uPlot (v1.6.21) */
-var uPlot=function(){"use strict";const e="u-off",t="u-label",l="width",n="height",i="top",o="bottom",s="left",r="right",u="#000",a="mousemove",f="mousedown",c="mouseup",h="mouseenter",d="mouseleave",p="dblclick",m="change",g="dppxchange",x="undefined"!=typeof window,w=x?document:null,_=x?window:null,b=x?navigator:null;let k,v;function y(e,t){if(null!=t){let l=e.classList;!l.contains(t)&&l.add(t)}}function M(e,t){let l=e.classList;l.contains(t)&&l.remove(t)}function S(e,t,l){e.style[t]=l+"px"}function E(e,t,l,n){let i=w.createElement(e);return null!=t&&y(i,t),null!=l&&l.insertBefore(i,n),i}function D(e,t){return E("div",e,t)}const z=new WeakMap;function T(t,l,n,i,o){let s="translate("+l+"px,"+n+"px)";s!=z.get(t)&&(t.style.transform=s,z.set(t,s),0>l||0>n||l>i||n>o?y(t,e):M(t,e))}const P=new WeakMap;function A(e,t,l){let n=t+l;n!=P.get(e)&&(P.set(e,n),e.style.background=t,e.style.borderColor=l)}const W=new WeakMap;function Y(e,t,l,n){let 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i=n.time;e.size=me(e.size),e.space=me(e.space),e.rotate=me(e.rotate),e.incrs=me(e.incrs||(2==n.distr?Qe:i?1==te?ht:mt:et)),e.splits=me(e.splits||(i&&1==n.distr?Ue:3==n.distr?Gt:4==n.distr?Lt:Rt)),e.stroke=me(e.stroke),e.grid.stroke=me(e.grid.stroke),e.ticks.stroke=me(e.ticks.stroke),e.border.stroke=me(e.border.stroke);let o=e.values;e.values=Pe(o)&&!Pe(o[0])?me(o):i?Pe(o)?_t(je,wt(o,Ne)):Ae(o)?function(e,t){let l=Je(t);return(t,n)=>n.map((t=>l(e(t))))}(je,o):o||Be:o||Ht,e.filter=me(e.filter||(3>n.distr?xe:Ut)),e.font=Ol(e.font),e.labelFont=Ol(e.labelFont),e._size=e.size(b,null,t,0),e._space=e._rotate=e._incrs=e._found=e._splits=e._values=null,e._size>0&&(fl[t]=!0,e._el=D("u-axis",B))}})),x?x instanceof HTMLElement?(x.appendChild(L),si()):x(b,si):si(),b}jl.assign=He,jl.fmtNum=$,jl.rangeNum=J,jl.rangeLog=j,jl.rangeAsinh=N,jl.orient=ll,jl.pxRatio=k,jl.join=function(e,t){let l=new Set;for(let t=0;e.length>t;t++){let n=e[t][0],i=n.length;for(let e=0;i>e;e++)l.add(n[e])}let n=[Array.from(l).sort(((e,t)=>e-t))],i=n[0].length,o=new Map;for(let e=0;i>e;e++)o.set(n[0][e],e);for(let l=0;e.length>l;l++){let s=e[l],r=s[0];for(let e=1;s.length>e;e++){let u=s[e],a=Array(i).fill(void 0),f=t?t[l][e]:1,c=[];for(let e=0;u.length>e;e++){let t=u[e],l=o.get(r[e]);null===t?0!=f&&(a[l]=t,2==f&&c.push(l)):a[l]=t}Re(a,c,i),n.push(a)}}return n},jl.fmtDate=Je,jl.tzDate=function(e,t){let l;return"UTC"==t||"Etc/UTC"==t?l=new Date(+e+6e4*e.getTimezoneOffset()):t==qe?l=e:(l=new Date(e.toLocaleString("en-US",{timeZone:t})),l.setMilliseconds(e.getMilliseconds())),l},jl.sync=tl;{jl.addGap=function(e,t,l){let n=e[e.length-1];n&&n[0]==t?n[1]=l:e.push([t,l])},jl.clipGaps=sl;let e=jl.paths={points:bl};e.linear=Ml,e.stepped=function(e){const t=q(e.align,1),l=q(e.ascDesc,!1),n=q(e.alignGaps,t);return(e,i,o,s)=>ll(e,i,((r,u,a,f,c,h,d,p,m,g,x)=>{let w=r.pxRound,_=e=>w(h(e,f,g,p)),b=e=>w(d(e,c,x,m)),v=0==f.ori?hl:dl;const y={stroke:new Path2D,fill:null,clip:null,band:null,gaps:null,flags:1},M=y.stroke,S=f.dir*(0==f.ori?1:-1);let E=-1===t?o:L(a,o,s,1),D=1===t?s:L(a,o,s,-1),z=b(a[1==S?E:D]),T=_(u[1==S?E:D]),P=T;v(M,T,x+m),v(M,T,z);for(let e=1==S?E:D;e>=E&&D>=e;e+=S){let l=a[e];if(null==l&&D>e)continue;let n=_(u[e]),i=b(l);1==t?v(M,n,z):void 0!==l?v(M,P,i):(n=P,i=z),v(M,n,i),z=i,P=n}v(M,P,x+m);let[A,W]=nl(e,i);if(null!=r.fill||0!=A){let t=y.fill=new Path2D(M),l=b(r.fillTo(e,i,r.min,r.max,A));v(t,P,l),v(t,T,l)}if(!r.spanGaps){let c=[];c.push(...rl(u,a,o,s,S,_,n));let h=r.width*k/2,d=l||1==t?h:-h,w=l||-1==t?-h:h;c.forEach((e=>{e[0]+=d,e[1]+=w})),y.gaps=c=r.gaps(e,i,o,s,c),y.clip=sl(c,f.ori,p,m,g,x)}return 0!=W&&(y.band=2==W?[ol(e,i,o,s,M,-1),ol(e,i,o,s,M,1)]:ol(e,i,o,s,M,W)),y}))},e.bars=function(e){const t=q((e=e||De).size,[.6,ce,1]),l=e.align||0,n=(e.gap||0)*k,i=q(e.radius,0),o=1-t[0],s=q(t[1],ce)*k,r=q(t[2],1)*k,u=q(e.disp,De),a=q(e.each,(()=>{})),{fill:f,stroke:c}=u;return(e,t,h,d)=>ll(e,t,((p,m,g,x,w,_,b,v,y,M,S)=>{let E=p.pxRound;const D=x.dir*(0==x.ori?1:-1),z=w.dir*(1==w.ori?1:-1);let T,P,A=0==x.ori?pl:ml,W=0==x.ori?a:(e,t,l,n,i,o,s)=>{a(e,t,l,i,n,s,o)},[Y,C]=nl(e,t),F=3==w.distr?1==Y?w.max:w.min:0,H=b(F,w,S,y),R=E(p.width*k),G=!1,L=null,O=null,I=null,j=null;null==f||0!=R&&null==c||(G=!0,L=f.values(e,t,h,d),O=new Map,new Set(L).forEach((e=>{null!=e&&O.set(e,new Path2D)})),R>0&&(I=c.values(e,t,h,d),j=new Map,new Set(I).forEach((e=>{null!=e&&j.set(e,new Path2D)}))));let{x0:N,size:U}=u;if(null!=N&&null!=U){m=N.values(e,t,h,d),2==N.unit&&(m=m.map((t=>e.posToVal(v+t*M,x.key,!0))));let l=U.values(e,t,h,d);P=2==U.unit?l[0]*M:_(l[0],x,M,v)-_(0,x,M,v),P=E(P-R),T=1==D?-R/2:P+R/2}else{let e=M;if(m.length>1){let t=null;for(let l=0,n=1/0;m.length>l;l++)if(void 0!==g[l]){if(null!=t){let i=ee(m[l]-m[t]);n>i&&(n=i,e=ee(_(m[l],x,M,v)-_(m[t],x,M,v)))}t=l}}P=E(ie(s,oe(r,e-e*o))-R-n),T=(0==l?P/2:l==D?0:P)-l*D*n/2}const B={stroke:null,fill:null,clip:null,band:null,gaps:null,flags:3};let V;0!=C&&(B.band=new Path2D,V=E(b(1==C?w.max:w.min,w,S,y)));const J=G?null:new Path2D,K=B.band;let{y0:Z,y1:$}=u,X=null;null!=Z&&null!=$&&(g=$.values(e,t,h,d),X=Z.values(e,t,h,d));for(let l=1==D?h:d;l>=h&&d>=l;l+=D){let n=g[l];if(void 0===n)continue;let o=_(2!=x.distr||null!=u?m[l]:l,x,M,v),s=b(q(n,F),w,S,y);null!=X&&null!=n&&(H=b(X[l],w,S,y));let r=E(o-T),a=E(oe(s,H)),f=E(ie(s,H)),c=a-f,h=i*P;null!=n&&(G?(R>0&&null!=I[l]&&A(j.get(I[l]),r,f+te(R/2),P,oe(0,c-R),h),null!=L[l]&&A(O.get(L[l]),r,f+te(R/2),P,oe(0,c-R),h)):A(J,r,f+te(R/2),P,oe(0,c-R),h),W(e,t,l,r-R/2,f,P+R,c)),0!=C&&(z*C==1?(a=f,f=V):(f=a,a=V),c=a-f,A(K,r-R/2,f,P+R,oe(0,c),0))}return R>0&&(B.stroke=G?j:J),B.fill=G?O:J,B}))},e.spline=function(e){return function(e,t){const l=q(t?.alignGaps,0);return(t,n,i,o)=>ll(t,n,((s,r,u,a,f,c,h,d,p,m,g)=>{let x,w,_,b=s.pxRound,k=e=>b(c(e,a,m,d)),v=e=>b(h(e,f,g,p));0==a.ori?(x=fl,_=hl,w=wl):(x=cl,_=dl,w=_l);const y=a.dir*(0==a.ori?1:-1);i=L(u,i,o,1),o=L(u,i,o,-1);let M=k(r[1==y?i:o]),S=M,E=[],D=[];for(let e=1==y?i:o;e>=i&&o>=e;e+=y)if(null!=u[e]){let t=k(r[e]);E.push(S=t),D.push(v(u[e]))}const z={stroke:e(E,D,x,_,w,b),fill:null,clip:null,band:null,gaps:null,flags:1},T=z.stroke;let[P,A]=nl(t,n);if(null!=s.fill||0!=P){let e=z.fill=new Path2D(T),l=v(s.fillTo(t,n,s.min,s.max,P));_(e,S,l),_(e,M,l)}if(!s.spanGaps){let e=[];e.push(...rl(r,u,i,o,y,k,l)),z.gaps=e=s.gaps(t,n,i,o,e),z.clip=sl(e,a.ori,d,p,m,g)}return 0!=A&&(z.band=2==A?[ol(t,n,i,o,T,-1),ol(t,n,i,o,T,1)]:ol(t,n,i,o,T,A)),z}))}(Sl,e)}}return jl}();
diff --git a/src/paths/stepped.js b/src/paths/stepped.js
index 113d1df0..bf3f1903 100644
--- a/src/paths/stepped.js
+++ b/src/paths/stepped.js
@@ -7,7 +7,7 @@ export function stepped(opts) {
 	// whether to draw ascenders/descenders at null/gap bondaries
 	const ascDesc = ifNull(opts.ascDesc, false);
 
-	const alignGaps = ifNull(opts.alignGaps, 0);
+	const alignGaps = ifNull(opts.alignGaps, align);
 
 	return (u, seriesIdx, idx0, idx1) => {
 		return orient(u, seriesIdx, (series, dataX, dataY, scaleX, scaleY, valToPosX, valToPosY, xOff, yOff, xDim, yDim) => {
@@ -23,19 +23,20 @@ export function stepped(opts) {
 
 			const dir = scaleX.dir * (scaleX.ori == 0 ? 1 : -1);
 
-			idx0 = nonNullIdx(dataY, idx0, idx1,  1);
-			idx1 = nonNullIdx(dataY, idx0, idx1, -1);
+			let lftIdx = align === -1 ? idx0 : nonNullIdx(dataY, idx0, idx1,  1);
+			let rgtIdx = align ===  1 ? idx1 : nonNullIdx(dataY, idx0, idx1, -1);
 
-			let prevYPos  = pixelForY(dataY[dir == 1 ? idx0 : idx1]);
-			let firstXPos = pixelForX(dataX[dir == 1 ? idx0 : idx1]);
+			let prevYPos  = pixelForY(dataY[dir == 1 ? lftIdx : rgtIdx]);
+			let firstXPos = pixelForX(dataX[dir == 1 ? lftIdx : rgtIdx]);
 			let prevXPos = firstXPos;
 
+			lineTo(stroke, firstXPos, yDim + yOff)
 			lineTo(stroke, firstXPos, prevYPos);
 
-			for (let i = dir == 1 ? idx0 : idx1; i >= idx0 && i <= idx1; i += dir) {
+			for (let i = dir == 1 ? lftIdx : rgtIdx; i >= lftIdx && i <= rgtIdx; i += dir) {
 				let yVal1 = dataY[i];
 
-				if (yVal1 == null)
+				if (yVal1 == null && i < rgtIdx)
 					continue;
 
 				let x1 = pixelForX(dataX[i]);
@@ -43,15 +44,22 @@ export function stepped(opts) {
 
 				if (align == 1)
 					lineTo(stroke, x1, prevYPos);
-				else
-					lineTo(stroke, prevXPos, y1);
-
+				else {
+					if(yVal1 !== undefined){
+						lineTo(stroke, prevXPos, y1);
+					}else{
+						x1 = prevXPos
+						y1 = prevYPos
+					}
+				}
 				lineTo(stroke, x1, y1);
 
 				prevYPos = y1;
 				prevXPos = x1;
 			}
 
+			lineTo(stroke, prevXPos, yDim + yOff)
+
 			let [ bandFillDir, bandClipDir ] = bandFillClipDirs(u, seriesIdx);
 
 			if (series.fill != null || bandFillDir != 0) {
diff --git a/src/paths/utils.js b/src/paths/utils.js
index 583f54cf..2c2a85e0 100644
--- a/src/paths/utils.js
+++ b/src/paths/utils.js
@@ -159,13 +159,21 @@ export function clipGaps(gaps, ori, plotLft, plotTop, plotWid, plotHgt) {
 
 		for (let i = 0; i < gaps.length; i++) {
 			let g = gaps[i];
+			// begin gaps always at x=0
+			g[0] = Math.max(0, g[0])
+			g[1] = Math.max(0, g[1])
+
+			// do not ignore first gap if less then first Point on chart
+			if(i===0 && g[0] <= prevGapEnd){
+				prevGapEnd = g[1]
+			}
 
 			if (g[1] > g[0]) {
 				let w = g[0] - prevGapEnd;
 
 				w > 0 && rect(clip, prevGapEnd, plotTop, w, plotTop + plotHgt);
 
-				prevGapEnd = g[1];
+				prevGapEnd = Math.max(prevGapEnd, g[1]);
 			}
 		}