I've run the test with Firefox *nightly* using the `MOZ_ENABLE_WAYLAND=1 ./firefox -ProfileManager -no-remote` parameters and everything works as expected.
The problem seems to be confined to **snap** version of Firefox in **Wayland** session (snap nightly version included). The snap package works fine with the old X11 session.
Thanks @Martin Stránský
I've run the test with Firefox *nightly* using the `MOZ_ENABLE_ WAYLAND= 1 ./firefox -ProfileManager -no-remote` parameters and everything works as expected.
The problem seems to be confined to **snap** version of Firefox in **Wayland** session (snap nightly version included). The snap package works fine with the old X11 session.