fixes #44181

src/vs/base/browser/ui/list/listView.ts

@@ -120,6 +120,11 @@ export class ListView<T> implements ISpliceable<T>, IDisposable {
 		this.scrollableElement.onScroll(this.onScroll, this, this.disposables);
 		domEvent(this.rowsContainer, TouchEventType.Change)(this.onTouchChange, this, this.disposables);
 
+		// Prevent the monaco-scrollable-element from scrolling
+		// https://github.com/Microsoft/vscode/issues/44181
+		domEvent(this.scrollableElement.getDomNode(), 'scroll')
+			(e => (e.target as HTMLElement).scrollTop = 0, null, this.disposables);
+
 		const onDragOver = mapEvent(domEvent(this.rowsContainer, 'dragover'), e => new DragMouseEvent(e));
 		onDragOver(this.onDragOver, this, this.disposables);
 

src/vs/workbench/parts/extensions/electron-browser/media/extensionsViewlet.css

@@ -27,10 +27,6 @@
 	height: calc(100% - 38px);
 }
 
-.extensions-viewlet > .extensions .extensions-list > .monaco-list {
-	height: auto;
-}
-
 .extensions-viewlet > .extensions .list-actionbar-container .monaco-action-bar .action-item > .octicon {
 	font-size: 12px;
 	line-height: 1;