I do not have the Wunderwaffe DG-2 in my upcoming map, yet strangely when I enter a part of the map, my Jugg stops working permanently. One hit from a zombie, I get permanent red screen and permanent heartbeat sound, with no health regeneration. Another hit, I go down. Re-buying Jugg does not help. A quick Google search suggests this happens in Treyarch's Black Ops (1-2 at least) maps as well...?

It seems that I'm not the only one to encounter this bug / glitch in custom maps. I've no idea why it occurs. Is it just a random bug that can't get fixed (like environmental hazards ending the game for all players in co-op), or is there something in the code that I can change?