Nythepegasus added the comment:
I used brew.sh to install Python, which I think uses the universal installer
(although I can’t check, reinstalling macOS after hours of failing to downgrade
back to Big Sur). I can’t remember the exact error, but it seemed to be from
Apple’s end since it
New submission from Nythepegasus :
Using tkinter.filedialog crashes on macOS 12.0 Beta (21A5294g) on M1 when the
open file dialog window is created. Full crash below:
2021-08-04 07:19:04.239 Python[40251:323363] *** Assertion failure in
-[NSOpenPanel beginServicePanel:asyncExHandler
