Yep. Just tested it literally 10 seconds ago. Still working as normal.
You must be doing something wrong man, or using it in one of the very few places that it doesn't work.
On a different note, does anyone know if it can be used to go through terrain, as well as walls? As in, steep terrain? There's this room that's hidden inside a 'pillar' of terrain that I'd love to be able to get into again, since I get use under-world flying to get there any more.
Edit: Ok, I can confirm it can be used to go through steep terrain. And I'm happy as larry at the moment since I'm able to use it to get inside the aforementioned room, which is one of my top 3 favourite explorations places in the whole of WoW.
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