I'm not sure if this has been covered or is known, but I didn't see anything listed with this version already on the boards :)
Just as the title says - using the latest version, but when I accept and get the warning that this may move me to a different realm ... it doesn't. I'm still on my own realm, can see everyone in the raid on the map but can't see them actually in-game. Looking at the raid chat in the 4 problem groups I've tried tonight I'm not the only one facing this problem, and no-one had any idea how to solve it; we tried relogging, summoning, you name it, without any luck.
I do know that the only time it's worked was the first one I joined tonight - that DID move me to another realm, but after that concluded (and I went back to my own realm) I couldn't transfer again. Perhaps this is something Blizz have implemented?