[vladvasiliu]

Is firefox actually fully integrated with gnome/gtk, or does it rely on some form of adaptor?

I've recently installed kde on one of my laptops (I usually use i3) and firefox is pretty wonky there. For example, with the OOB configuration, if I double click the top border of a window, it will maximize vertically. Firefox seems to ignore that. It does fully maximize if I double click the title bar, though.

[ahartmetz]

Right and middle clicking the maximize button maximize horizontally and vertically with KWin and that does work with Firefox. Hard to say which part is to blame with i3 + Firefox. But it's not that Firefix needs Gnome.