I am not sure if this is a bug or just not implemented for this flight.
I assume that is what buttons 1, 2, 3, and 4 are for. But in case they are reserved for something within the campaign.
I think it would be better if you could disable switching keybindings without setting them as something else.
I would like to disable mouse scroll weapon switching and just use ‘1’ and 2’’ to switch to primary and secondary weapons.
For now a quick fix for anyone else with this issue:
Set switch weapon as ‘1’, and overwrite the switch weapons as scrollwheel to ‘2’.
Since there can only be two weapons equipped, should work for now.
Good luck and happy Flight weekend y’all!