Designer sometimes crash on windows when I'm loading some plugins

I have written some plugins for pyside6 designer and they work well on Linux. But when I tested them on windows something strange happened. Sometimes it could run normally, but sometimes it returned 3221225477.

I don't know what's wrong and I have downloaded debugview to check error messages, but I could find nothing. Here is log: https://paste.debian.net/1312487

We found that the 6.4.2 pyside can always run successfully. I also found a commit that may cause this problem. 

Try to folk this or this. And run 

python tools/designer.py

, you will meet this problem.(These two repository achieve the same result in different ways.)

There also is a person said this problem also happened on MacOS.