I've also noticed a bug involving rf-ammo boxes and /spawnobjects command. Whenever I play on a level containing those boxes, and the command gets used, these boxes sooner or later stop spawning for me. While the command hasn't been used yet, they seem to spawn for me normally. I haven't tried myself yet but I guess this doesn't at least happen for hosts, and other players just don't care/don't pay attention to that, although they would have experienced it. Practically this is a very minor bug, and I can very well live with it, but I think it should be noted about anyway.