I have installed a new Fibaro Single Switch 2 in my hallway. The light correctly switches on when I toggle it “on” in the UI, however after a second the toggle switches back to “off” state but the light is actually still on.
To switch the light off with HA I have to toggle to on and directly to off again (which turns the light off).
The physical switch I installed is working fine.
I have double checked parameter 20 (momentary of normal switch) and made sure this is set to normal switch.
I really have no clue why this is happening.