Callvote immediately after a vote is passed
If you call another vote after one is passed it stops the previous vote from taking action. This is often abused by players who don't teams to be shuffled, for example.
I believe this ought to be fixed.
Another issue on voting.
Whe the previous map changes and all players have to reconnect to server, apparently some people can join faster than others.
If such people call a vote as soon as reconnect, those who join a bit late cannot have the privilege to vote.
So there should be around 10 secs of wait before anyone can call a vote on map change.