Map ends without warning

[|1.RD|.Malice]

I just started running an RO server and am having a weird problem. The map is set to 2 rounds of 20 minutes each. However somewhere in the second round the map will just end and the voting screens comes up. We dont get any message or anything. Theres still time left and both sides are still holding objectives. Any ideas of whats causing this.

[Imaginos]

I see this in Deathball too. Game 'ends' anywhere from a few seconds up to 40 or more seconds early. Can't figure this one out.