[DiapDealer]

See the new hidpi settings in the UI appearance preferences. Depending on your actual screen dimensions, you may be better off turning qt's highdpi support off entirely. "Detect" will honor any system Qt highdpi environment variable you may have set, "On" will turn on Qt's highdpi scaling regardless, and "off" will turn it off regardless of any system environment variables related to Qt highdpi scaling.

The "incomprehensible sizes" you mentioned (though I can't imagine what's incomprehensible about simple pixel dimensions) are a result of Qt (and Windows) trying to automatically scale things on its own. If that's not working correctly for your particular setup, turn it off in the settings. The extra granularity for the variety of setups/resolutions out there is precisely why the new settings were added.