It's quite a prominent bug in Survival games. When a player leaves the game (and possibly under other conditions) and the round that was played has ended, yet the round to be played hasn't started, the round to be played doesn't start. This leaves the players that survived the round that was played able to run around and capture the flag for an additional point (at which point the next round will start). The bug is also rectified when a player changes teams or another joins the game, obviously the server checks to see if the round has ended then. Link me if this has been reported before, I did run a search.
