Ok, the problem doesn't happen with PySide2. It's likely with recent versions of PyQt5, although I'm not exactly sure of the first version where it started. It's also possible the bug doesn't happen on MacOS 10.14 (Mojave), but my 2011 hardware is pinned to 10.13 so I can't test that. So far I'm glad it's working now, but I can try another test if you want. BTW I think the qtpy commit is on the main branch... -- You are receiving this because you commented. Reply to this email directly or view it on GitHub: https://github.com/tohojo/flent/issues/167#issuecomment-511538572