Minus 20 players
I did a /who check last night, and it told me there were -20 players on the PvE server. Not sure if there was actually 20 people on, as I didn't see anyone.
Not a huge bug however thank you for the report. The /who command is very accurate and even though it showed -20 players it almost certainly meant there were 20 players logged in at the time.
If this happens again let me know and I will be sure to pass it along.
on the pvp server
Yeah, this is a bug, already on our list. Thanks for reporting anyway!