During a trials run with some friends earlier today, I think we encountered someone exploiting some type of glitch in the map. I've done some searching online to try and find out any information I could, but couldn't find anything. Whenever we would spawn on defense near Keyhole, before we could even move from our spawn up to Keyhole, one of the enemy players was appearing behind us(if you were to move forward towards Keyhole from initial spawn) on the motion tracker, was throwing grenades down at us, yet we were completely unable to see him. It didn't seem like he could shoot us, either. Has anyone else experienced this at all? If it happens again I'm going to try and record some game clips to share with people.