I looked on bugtracker and couldn't find anything so i'll post it here. Most people who sit within range of me (not all) seem to mysteriously stand up every 5 seconds. First time it happened it was an Enki and a Fenki and they weren't standin' at the same time. No-one else could see it so maybe it's just my client. I re-logged and it stopped until a Ylian male came and sat down. He started doing the same but he was getting up to stretch (Don't know if Ylian's are suppose to do this while sitting)
Also two out of three times the sit emote didn't show. There was also other people further away sitting but they stayed sat.