Bumping this since I get a lot of questions ingame and told them to check forums.
As mentioned, stealth is broken here. I too played retail from 2005 and you get knoced out of it way too easy on this core at the moment. Good thing its on the bugtracker, but remember thats not a guarantee.
For this to be adressed people need to be vocal about it and in a reasonable way. Proivide facts.
Meawhile, this is a good time to learn how to approach a target in stealth properly if you're new to playing a rogue/druid