I climb into a helicopter that has a ramp, e.g. the Huron. (I'm a sniper)
I sit on the rear left seat (the seat which has control of the ramp).
I have a laser designator in my weapon list.
Then I open the ramp of the choper myself (not the pilot) to look outward through the open ramp.
If the pilot closes the ramp and I am still watching through the laser designator, then it happens a bug.
My weapons switch automatically between the laser designator and for example my snipe without ending as if I was scrolling between weapons and selecte each weapon after the other.