[deleted]
Lucien_Lachance
Besides causing issues with setting FireFox as the default browser this might also lead to other problems and stability issues as it is a setting intended for use with sandboxed app formats likes Flatpak or Snap (it does the same as launching FireFox with GTK_USE_PORTAL=1 IIRC).
Maybe one day we will actually get proper support for native KDE Plasma dialogs in FireFox out of the box ...