I know alien weapons are supposed to destroy cover, but recently I've noticed that sometimes alien weaponry passes right through cover as if it weren't there. One time an alien shot through the edge of train and killed one of my soldiers, and when I reloaded and tried shooting the alien from the very same spot, it said that the alien was 100% protected behind the train. This isn't the first time this has happened, and it's really starting to ruin the gameplay. I really hope this gets fixed soon, since I've really been enjoying the game otherwise.