Qt for Python (PySide/Shiboken)

I am experiencing an inconsistent style problem in my PySide application across different OS: on Mac and Linux everything looks fine while on Windows (Windows 11 in particular), when clicking to edit a cell in a QTableView the editor is drawn over the data already present. I also have an inconsistent behavior in a horizontal layout shrinking too much and cutting out some information in the fields contained in it. I did not observe this behavior using version 6.4 while now version 6.7 seems to be causing the issue. Is something that is fixed somehow by 6.8?