Chat autoreconnect ignores userlist changes
If the internet connection is down for a longer time, and inbetween the chat connections the user list changes, the changes which didn't fit to the backlog are ignored by the chat.

The solution is to make the client clear the userlist on reconnect and load it again from the type 7 packets, just like a clean connect (with a refresh) does.

edit: i have found an earlier screenshot, in which a reconnect caused the client to skip a type 10 rename packet (which is not resent in a backlog, just in the 7s) and leave Sword as afk spɟsƃɟ