Merge pull request #2084 from TechSavvvyyy/fix-helping-layer-position

fix helping layer position

Author: binrysearch

src/util/getOffset.ts

@@ -30,7 +30,8 @@ export default function getOffset(
   const scrollTop = window.pageYOffset || docEl.scrollTop || body.scrollTop;
   const scrollLeft = window.pageXOffset || docEl.scrollLeft || body.scrollLeft;
 
-  relativeEl = relativeEl || body;
+
+  relativeEl = relativeEl || docEl || body;
 
   const x = element.getBoundingClientRect();
   const xr = relativeEl.getBoundingClientRect();