SUMMARY Font scaling is blurry on HiDPI in GTK applications STEPS TO REPRODUCE 1. Use wayland 2. Configure display scaling (e.g. a factor of 2) 3. Open a GTK application. Firefox is a good example OBSERVED RESULT Fonts within firefox itself, and webpages, are very blurry EXPECTED RESULT Smoothly scaled fonts, like the rest of the environment SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.15 KDE Plasma Version: 5.15 KDE Frameworks Version: 5.55 Qt Version: 5.12 ADDITIONAL INFORMATION Using KDE Neon (5.15)
GTK apps with high DPI support are fine. See gtk-demo Firefox is running in xwayland. *** This bug has been marked as a duplicate of bug 389191 ***
I stand corrected. Thank you for pointing me in the right direction.