It looks like it was still using PyQt5 in your case, so make sure to first do: ``` export QT_API= pyside2 ``` If this is a long-term fix for Mac, maybe that var could be set on MacOS when sys.platform is darwin, assuming we have a chance to do so before those libs are initialized. Probably best would be if they fixed PyQt5. :) -- 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-511707373