As soon as you enter any dungeon , especially those with events (such as toc, cos, hos, etc.) you are automatically getting saved without even killing a single mob or boss. The game should only register save ID only when a boss dies…
Just had irani bot on Gehenas (classic) named Madserpent who literally said nothing after like 15 min of questions directed to him , just acted like a bot, pre determined movements and spell casts. We entered CoS , didnt even activate beta or kill any mob, we got saved … he was the leader so we decided to remake the group, when we came back to enter, he was in dalaran and we all got bug saying that we are not in this instance`s group and basically we lost the ID for that day for no reason at all