Nostalrius Begins - Quality wow vanilla realm (1.12)

Posted this on the Bug Tracker but I am looking for others opinion on Invisibility both potions and Gnomish Cloaking Device.

https://www.youtube.com/watch?v=wcA8O_dRLy0 @ 1:20 Notice mobs are still visible to the user.

https://www.youtube.com/watch?v=4ui6mf3 ... Q0&index=5 @ 4:42 Hunter uses Gnomish Cloaking Device to get a 2nd aimed shot off on target.

Did tis change in a later patch? When used now all NPCs and Players vanish.

I think it was changed to be that way in TBC. As for casting in invisibility, the Gnomish Cloaking Device should be the only invisibility item that should allow that in 1.12.