[random test failure] EntityDisplayTest::testExtraFields()

Problem/Motivation

Might not be random, but this just broke the branch tests on 9.2.x.

1) Drupal\Tests\field_ui\FunctionalJavascript\EntityDisplayTest::testExtraFields
WebDriver\Exception\CurlExec: Curl error thrown for http POST to http://chromedriver-jenkins-drupal8-core-regression-tests-35995:9515/session/a8b8ea18b9520c6785c23f17f705a552/execute with params: {"script":"(function (element) {\n    var event = document.createEvent(\"HTMLEvents\");\n\n    event.initEvent(\"drop\", true, true);\n    event.dataTransfer = {};\n\n    element.dispatchEvent(event);\n}(arguments[0]));","args":[{"ELEMENT":"0.4273382782664239-5"}]}

Retries: 10 and last result:
{"sessionId":"a8b8ea18b9520c6785c23f17f705a552","status":10,"value":{"message":"stale element reference: element is not attached to the page document\n  (Session info: headless chrome=74.0.3729.157)\n  (Driver info: chromedriver=2.38.552522 (437e6fbedfa8762dec75e2c5b3ddb86763dc9dcb),platform=Linux 4.9.0-0.bpo.6-amd64 x86_64)"}}

https://dispatcher.drupalci.org/job/drupal8_core_regression_tests/35995/...

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet