I think i have seen this bug described here before, but didn't find it.

So this happened: i was playing insta freezetag last night on de server and the map was wintersedge. Game starts normally, the announcer is doing the countdown, players are joining in and out, etc., and when there was 3s left before the start a player shot me.

Short youtube video (shooter's pov): http://www.youtube.com/watch?v=cZo7CzFMWdU
Demo (whole match and my pov): http://www.sendspace.com/file/ckbn02

(the attachment thing didn't work for me, tried to upload, but nothing happened)