Investigate intermittent "TypeError: Cannot read property 'createEvent' of null" during tests

[diondiondion]

Sometimes the following error occurs while running tests, both locally and remotely.

TypeError: Cannot read property 'createEvent' of null
    at Object.invokeGuardedCallbackDev (/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:3905:26)
    at invokeGuardedCallback (/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:4056:31)
    at flushPassiveEffectsImpl (/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:23543:11)
    at unstable_runWithPriority (/home/circleci/repo/node_modules/scheduler/cjs/scheduler.development.js:468:12)
    at runWithPriority$1 (/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:11276:10)
    at flushPassiveEffects (/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:23447:14)
    at Object.<anonymous>.flushWork (/home/circleci/repo/node_modules/react-dom/cjs/react-dom-test-utils.development.js:992:10)
    at Immediate.<anonymous> (/home/circleci/repo/node_modules/react-dom/cjs/react-dom-test-utils.development.js:1003:11)
    at processImmediate (internal/timers.js:464:21)
/home/circleci/repo/node_modules/react-dom/cjs/react-dom.development.js:3905
      var evt = document.createEvent('Event');

It's not clear to me why this is happening and what can be done to prevent it. Usually re-running the tests makes them pass without the error.