I just played a PvP mission today and I was zoomed in on an enemy player when I got hit and the "Treat self" default action symbol came up immediately and obstructed my aim sight.
IDEA:
Do not show the default action icon while scoped/aiming. Default action should trigger still (e.g. open door) while aiming down the sights, but the icon shouldn't come up. OR only make the 'Treat self' action a special case, not to show up while scoped/aiming. {F20038} {F20039}