So, I just had a quick play and found that Stoneclaw (no, that's not a mistake... I do mean Stoneclaw!) and the fire totems break stealth. Unimproved earthbind doesn't, and I don't have any character with that talent so I can't check.

Interesting about Stoneclaw though!

A quick Google confirmed that it's been that way for a while, with no comment form Blizz on whether it's intentional