Steps to reproduce:
I'm trying FF on Linux Wayland (KDE Plasma 5.23.1 and GNOME 41) and hit a road block with tab management extensions being unable to bring other browser windows to focus. E.g. Tab Manager Pro only works if I select tabs from the current window. Selecting tabs from windows does nothing on either KDE or GNOME. Simply nothing happens on KDE; GNOME displays "Application XYZ is ready..." notification but still the requested windows doesn't come into focus.