First bug, today i played on second L4D2 server. I made it to the Mall finale, but i don't have any informations about earning points also my nick don't saving on the rankings.
Second, /csm don't works properly, When i switch on L4D2 campaigns to Bill, my hands in first person view often disappear, when i switch on L4D1 campaign to Nick/Rochelle/Ellis/Coach only the worldmodel changes, the first person hands, portrait and voices are still from L4D1 Characters. Also when i switch to a L4D1 character (below 4) hands again disappearing.
Found a third bug, when i switch difficulty to another than normal, it's switch back to normal on the next map.