No problems here. I had problems with the drone 1st, which "follows" your enemies. Thing is, you need to hurt one 1st and then you can press Q/E to attack the enemy. But when done this you can also press Q/E on other enemys. Dont know if that is bugged, but it has nothing to do with awreness when they spotted you. You always need to shoot one 1st and then it triggers the Q/E pressing on others.