JfrRecordingTest (uitest) hangs on the automated analysis page

Trying to run uitests on my machine (Fedora) hangs on JfrRecordingTest. If anyone else could test/verify it'd be appreciated, at the moment I wonder if it's a Linux-specific issue as Marcus ran into errors with the JfrThreadsPageTest which runs after this test class.

I'll attach a screenshot, but essentially when the automated analysis page starts populating with graphics the ui hangs. This issue doesn't happen if I checkout the commit before the 2020-09 update (pre-JDK 11 update), but happens on the 2020-09 checkout.

I've tried tracing the paths with some crude logger statements, and it looks like something happens between a unit test completing and the @after method starting.

Screenshot: