Something I have noticed in my playthroughs is that patrols start over watching instead of moving after around 4 or 5 turns of no combat. This wouldn't be much of a problem if it wasn't for the fact an overwatched patrol does not go alert ever. seriously once a patrol starts overwatching it self you can got right upto them and they will rarely move.
This is where I am confused I do not know if it is a bug or a feature. cause I don't know if it is the patrol going on alert and not knowing what to do or just an AI recation thing.
THough from it I was able to kill a muton pod by blowing up the floor they where on from bellow.