I think if you go to flatseal, search for keepassxc and scroll down to environment and there type in QT_QPA_PLATFORM=xcb you will get keepassxc running through xwayland (i think you can also just toggle off wayland and toggle on x11 in the same settings) . I think if you apply the same to your browser (via flatseal turn on x11 and turn off wayland) then you should be good to go. note that x11 is less “secure”, but it should work. I will qualify I haven’t tested it as I setup browser integration another way Installing 1Password in Bluefin, a better way? - #26 by jpl .