An issue opened in redux-form:
https://github.com/erikras/redux-form/issues/3771

The failed test:
https://github.com/theforeman/foreman/blob/develop/webpack/assets/javascripts/react_app/components/bookmarks/form/form.test.js#L35

No errors when running the app.

Travis will continue to fail until we will fix this issue.
Can be solved temporarily by pining the redux-form version to 7.2.0