1-.This is known but events get bugged if someone logs out, or sometimes you can join in a event even if we dont have one.
2-. My char TreeNames left OS and he still can uses Liquid Ground (Relogged and i still can use it)
3-. Sometimes in a event you cant use one of your spells.
4-. Relogging makes npcs unable to move.
5-. When you kill a npc and you burn/poison it, if it respawns fast it still will be burned/poisoned..