Multiple user instances after reconnecting to the room

[t4llfly]

Represent:

• Connect to the room
• Wait for another member for this room
• Disconnect and connect again
• Multiple users with the same name are visible.
• After period of time, they disconnects and only real one stays.

IMO, this can be related to the server WS connection processing. I tried to fix this earlier, but this fix didn't worked and only crashed the whole connection processing, so the updates were rollbacked.

Target version to fix: < 1.0.0