I also witnessed an alien shooting through the closed door of a house. I don't recall if the laser fire went through the door or broke it. I did not have LOS on the alien prior to him firing.
The shooting through ships thing is a dealbreaker, but drop a line when you get that hotfixed and I'll gladly hop back on the beta testing. I hadn't played beta since back in June and have to say I'm very impressed with the progress. Great job all around.