No dark mode on any window

[vitodoc]

Dark mode hasn't worked for several months.
It is impossible to use the program for a long time with a white background, it hurts the eyes.
Please fix

[OH1KH]

"Dark mode" is not Cqrlog feature. It comes from you Xwindow system. And needs QT5
I assume something has happened to your system (possible update(s) has changed something).

Here is the view from Cqrlog 2.6.0(001) compiled from current source code with QT5 widgets today 2020-10-08

[blackbicbiro]

dark theme on Pop_os! works when OS is set to dark theme:-)