Big sur QT is not showing widgets

Question

Since today's release of Big Sur, my QT application stopped working, no any errors, project runs, just Windows are not shown.

using Python with a Pyside2, writing, and launching with a Pycharms. Was fully functional yesterday - before upgrade. Tested even with a simplest empty window:

app = QApplication(sys.argv)

window = QWidget()
window.show()
sys.exit(app.exec_())

Same nothing shown.

Can anyone suggest what can I check? Where to begin?

just to clarify: Python 3.9 – Kamornik Cola Nov 14 '20 at 11:10 — Kamornik Cola, Nov 14 '20 at 11:10

score 5 · Answer 1 · answered Nov 15 '20 at 22:10

5

after long long research - very weird solution... but until will be fixed by Qt - please see here : Apps not popping up on macOS Big Sur 11.0.1_ for me it was a life saver- hope it will help someone

answered Nov 15 '20 at 22:10

Kamornik Cola

644
8
20

Thanks for this, I had the same issue with frustrating hours of debugging not realizing it was the upgrade to Big Sur grrr – Edwin Fernandez Nov 25 '20 at 15:47
update!!!! using this approach actually makes breakpoints to crash the Python!!! – Kamornik Cola Dec 01 '20 at 17:34
1

after another research - this only the thing that really helps :https://forums.macrumors.com/threads/pyqt5-and-big-sur.2260773/ – Kamornik Cola Dec 01 '20 at 17:34

Big sur QT is not showing widgets

1 Answers1