Backed out changeset ed389b1ea7da (bug 1532397) for debugger failure CLOSED TREE

devtools/client/debugger/new/src/components/Editor/Preview/index.js

@@ -50,14 +50,10 @@ function inPopup(e) {
 
 function getElementFromPos(pos: DOMRect) {
   // $FlowIgnore
-  // We need to use element*s*AtPoint because the tooltip overlays
+  return document.elementFromPoint(
-  // the token and thus an undesirable element may be returned
-  const elementsAtPoint = [...document.elementsFromPoint(
     pos.x + pos.width / 2,
     pos.y + pos.height / 2
-  )];
+  );
-
-  return elementsAtPoint.find(el => el.className.startsWith("cm-"));
 }
 
 class Preview extends PureComponent<Props, State> {