Flickering Navigation Pane

Are there any Users still having a problem with the Navigation &/or Levels Pane flickering? I've had this issue for months now with the Navigation Pane. I contacted On1 Support & James told me that they were aware of the problem that some users were having & it would be fixed in an update. There's been 2-3 updates since (now I have 2018.5.3.5757) & now with the latest update the issue is also with the Levels Pane :-(

It would be good to know if anyone had the problem & now it's gone & if anyone knows of a way to stop it.