Monsters play multiple wake-up sounds under certain conditions
Sometimes in co-op you will hear monsters seemingly "wake up" over and over again. This is actually believed to be a desync in which the client thinks the monsters have woken up but they have not on the server. This can actually be easily reproduced in e1m1 on UV online. Simply go to the left and stand in the sector with the two lamps, the two zombies will activate up by the green armor, but the two behind the columns will not. If you fire while in that small sector, you will experience the bug- the monsters wake up over and over but you will see they do not move out of position or fire.
Created attachment 306 [details]
r2423 Monster Wakeup Demo
The attached demo is recorded with r2423 and shows off the bug as described in my previous comment. doom.wad required.
< AlexMax> we didn't encounter it at all last night, and I accidentally loaded an old odasrv beforehand that replicated it pretty easily
< AlexMax> it is still possible, but it's only possible due to packetloss
We're going to mark this down as a duplicate of the larger packet loss bug #597 at this point.
*** This bug has been marked as a duplicate of bug 597 ***