I've noticed this same effect (I think - something pretty similar anyway) every once in a while using GW - doesn't seem to happen all the time, and I can usually make it go away by exiting out and restarting the game. I hope you can get it fixed 'cause it is real annoying when it happens.
Great work on GW generally though - still struggling to get through my first patrol (RL's a biatch) with GW but liking it real well so far
