I too am waiting on a patch to address the LOS issues. Though I am trying to keep playing on. At this point I have put in a lot of hours and need to back off a bit anyway. I haven't played in two days because I had missed out on so much sleep. Plus I was starting to dream XCom.
I've also had a trooper Run & Gun up next to a target and miss the alien with a 100% to hit chance while standing next to it (point blank)... with a Shotgun?
I think I yelled, WTF! And my wife asked if everything was ok.
Hell, no, its not ok! I just got ganked by the game.