Merge pull request #4105 from jeanp413/jp/fix-vs-160070

Fixes https://github.com/microsoft/vscode/issues/160070

src/browser/renderer/DevicePixelObserver.ts

@@ -31,6 +31,11 @@ export function observeDevicePixelDimensions(element: HTMLElement, callback: (de
       callback(width, height);
     }
   });
-  observer.observe(element, { box: ['device-pixel-content-box'] } as any);
+  try {
+    observer.observe(element, { box: ['device-pixel-content-box'] } as any);
+  } catch {
+    observer.disconnect();
+    observer = undefined;
+  }
   return toDisposable(() => observer?.disconnect());
 }