I suggest that we start this topic where people will send screenies/demos of funny bugs found in Urban Terror.
I'll start with one of the funniest I've ever found throughout my UrT past adventures.
It happened on Cloud-9's zombie server. Apparently, the map ut4_tunis is far from being the perfect map in Team Survivor for more than 26 players. A few players were like stuck in the map, and were unable to move although able to see their sideways. Some of them were walking through the walls around and seemed like CI-ing, while their ping wasn't. Amongst them, two people from the red team had their head slightly tweaked during the first round.