Priority: P2: Important
Affects Version/s: 5.13.0
Fix Version/s: None
Component/s: Widgets: Style Sheets
I only use Qt with the python bindings so this report will only have reproduction cases and errors reported from the bindings, sorry if this isn't good enough.
As I said I only use the python bindings for QT I do not know which version of Qt it actually showed in but I have checked a lot of versions of PySide2 and the issues comes up in and after 5.12.6. (5.12.5 is fine). It also shows up in PyQt5 5.13.2 (5.13.1 is fine) and after. I am not very well versed in things like this and my knowledge extends no further than "can use it".
If you run the script supplied this will happen.
No error is shown and the window is dark, the style was applied (Working.png).
An error is shown and the window is white, the style was not applied (Bug.png).
The example images qtmodern_working.png and qtmodern_bug.png are from this repository and branch, they of course are not as simple but shows how the error would show in an "actual" application.
I reported this first here I
I put it as Component: Style Sheets because it seems to crash on that, but I am not actually sure if that's the culprit.