Rollback after sudden DC due to operation something like that.

I was doing this Shrine Map and there's a leaguestone dropped with a chance of voidspawn of Abaxoth. If i remember correctly that was a Lucrative bloodlines leaguestone. After a couple of seconds I got disconnected to the log in screen and it says something about operation etc. After I relogged, the leagustone was gone including the portal for the Shrine map.

Happened to me multiple times this past few days. Thank god nothing important was affected with the rollback. It's still annoying though.