diff --git a/packages/redux-devtools-ui/test/Editor.test.tsx b/packages/redux-devtools-ui/test/Editor.test.tsx
index 82269b85..5f717bae 100644
--- a/packages/redux-devtools-ui/test/Editor.test.tsx
+++ b/packages/redux-devtools-ui/test/Editor.test.tsx
@@ -1,40 +1,11 @@
 import React from 'react';
 import { render } from '@testing-library/react';
 import { Editor } from '../src';
-import 'codemirror/mode/javascript/javascript';
 
 describe('Editor', function () {
-  const getBoundingClientRect = jest.fn();
-  const getClientRects = jest.fn();
-
-  // See https://github.com/jsdom/jsdom/issues/3002
-  document.createRange = () => {
-    const range = new Range();
-
-    range.getBoundingClientRect = getBoundingClientRect;
-
-    range.getClientRects = () => {
-      getClientRects();
-      return {
-        item: () => null,
-        length: 0,
-        [Symbol.iterator]: jest.fn(),
-      };
-    };
-
-    return range;
-  };
   const { container } = render(<Editor value="var a = 1;" />);
 
   it('renders correctly', () => {
     expect(container.firstChild).toMatchSnapshot();
   });
-
-  it('calls getBoundingClientRect', () => {
-    expect(getBoundingClientRect).toHaveBeenCalled();
-  });
-
-  it('calls getClientRects', () => {
-    expect(getClientRects).toHaveBeenCalled();
-  });
 });