refs microsoft#153267 (microsoft#155546)

Author: sbatten

src/vs/base/browser/ui/contextview/contextview.css

@@ -5,14 +5,12 @@
 
 .context-view {
 	position: absolute;
-	z-index: 2500;
 }
 
 .context-view.fixed {
 	all: initial;
 	font-family: inherit;
 	font-size: 13px;
 	position: fixed;
-	z-index: 2500;
 	color: inherit;
 }

src/vs/base/browser/ui/contextview/contextview.ts

@@ -206,7 +206,7 @@ export class ContextView extends Disposable {
 		this.view.className = 'context-view';
 		this.view.style.top = '0px';
 		this.view.style.left = '0px';
-		this.view.style.zIndex = '2500';
+		this.view.style.zIndex = '2575';
 		this.view.style.position = this.useFixedPosition ? 'fixed' : 'absolute';
 		DOM.show(this.view);