Doing BRD pickpocket runs on my 60 rogue, literally just had 5 Vanishes in a row do absolutely nothing.
For a couple, I Vanished immediately after the resist. Nothing. For the others, I waited a second and put some space between me and the mobs. Nothing. Mobs just pulled me out all 5 times like it was nothing.
It’s never been an issue before for me, at least not like this. Just had a 6th one fail… like, it’s flat out not even working. I’ve spent a lot of time doing these runs and never had anything close to this happen. I have yet to have a single one actually work.
Vanish doesn’t work currently. Blizzard needs to do more work on this issue and find out what’s causing it to not drop combat right away like it should. Same thing with hunter FD.
Sapping someone in vanilla ALWAYS put you into combat, briefly. This has been confirmed by videos from vanilla showing this to be the case. So sapping putting you into combat is definitely not a bug.
About 14 hours ago, we deployed a hotfix that should have addressed Vanish.
Basically, Vanish should cause enemies to drop target, and we had a bug that was preventing them from dropping target. We fixed the bug.
There are still intended conditions in which enemies can “see through” Vanish, of course. (Example: the Bloodhounds in BRD)
As this hotfix required server restarts to take effect, we expect that it is now working as intended on realms in the Americas, and will be picked up with maintenance tomorrow in Europe.