after the recent update of my office desktop computer, I now experience a strange behavior.
My desktop settings are 4K resolution with 2x scaling and adwaita dark theme applied.
When I start any QT program (kate, kile, qpdfview, etc.) via thunar (it doesn’t matter wether left- or right-click), it starts with the light theme and a tiny 1x scaling.
The same programs display themselfs in the correct manner if I start them via Start-Menu, the terminal or even via a different file browser (PCManFM).
Where can I look to determine why and how thunar starts them differently?
Thank you all in advance for your help
PS: thunar Version: 4.18.6, PCManFM Version: 1.3.2