Created attachment 187176 [details] example of anti-aliasing issue SUMMARY I have 3-display setup: 1. 1920x1200 (100% scale) 2. 2560x1440 (120% scale) 3. 1680x1050 (105% scale) (scales ale different to preserve the same visual size of an application on all displays) When I open Okular and open random PDF document e.g. on second display, everything is OK. But when I move the window to first or third display, anti-aliasing is not applied and fonts are pixelated. When I move window back to second display, everything is OK again. STEPS TO REPRODUCE 1. open PDF document in Okular 2. move window to different display with different scaling OBSERVED RESULT font is poorly readable and pixelated EXPECTED RESULT font should be anti-aliased SOFTWARE/OS VERSIONS System: Fedora KDE 43 Kernel: Linux 6.17.7-300.fc43.x86_64 DE: KDE Plasma 6.5.2 ADDITIONAL INFORMATION I found a workaround by changing the Zoom factor. Document is forced to redraw and anti-aliasing is applied. Maybe this redraw function should be called even when window is moved from one display to another to reapply the anti-aliasing