I've noticed a very annoying bug whilst aiming down sights in pvp, as your in mid battle with shot guns and also noticed it with telesto too as you hold L2 to aim either mid air or ground 80% of the time when you go to press R2 to fire it zooms in to fire and then doesn't and goes back to l2 position. I know it's not my controller as I sent it of to Sony and they replaced it, also I have 2 others and it's the same with those. P.s it doesn't happen in any other game bar destiny 2 I've checked.