Hi-DPI support on Windows with 4K monitor
Some users report that GTK App has scale issues on Windows with 4K monitor.
Incorrect Scaling on High DPI monitor since GTK4 update
Before the switch from GTK3 to GTK4, everything was scaling fine without issue.
GTK4 apps have double scaling on hidpi
I use Plasma on 4K display with scaling set to 200 %. PulseEffects (GTK3) worked fine, however now with EasyEffects (renamed PulseEffects and ported GTK4) installed, window is double scaled e.g. it is shown with scaling of 400 %. I tried running EasyEffects with variables GDK_SCALE and GDK_DPI_SCALE, but it doesn't seem to have any effect. Already checked with EasyEffects developers (https://github.com/wwmm/easyeffects/issues/1167) and it's not an issue with EasyEffects, because same issue exists also with gtk4-demo application.