My Firefox which is an APT install (not snap) has UI font which does not match with KDE theme and font configuration. I checked the Gnome/GTK Application settings and the theme is Breeze. I checked with Adwaita and there is no change. How can I fix this issue?
Details:
Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.5
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-28-generic (64-bit)
Graphics Platform: Wayland