Blizzard have posted some known bugs from the pre-patch. We have player boosts (both the Season of Discovery one and the paid one) not working for Pandaren characters. And then there’s a queuing issue for Wintergrasp and Tol Barad battlegrounds, as you’ll have to head on over to them to queue.
These issues are being worked on and will be fixed soon.
Pandaren may have issues with being boosted and return an “Internal Error” message. This may happen when using the level 80 Cataclysm boost or the level 85 Season of Discovery boost.
This is not the intended behavior, and we’re working on a fix so you can continue with your Pandaren journey. We’ll reach back out once we have one!
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At this time, Wintergrasp and Tol Barad battlegrounds cannot be queued for from the PvP window. They can be queued for by going to the battleground location.
This is a bug, and we’re working on fixing it soon.