I've been wandering aimlessly for a little while and I ran into a gorilla-ish thing with spikes at the end of its arms (an Ulbernaut), but when I tried to attack it, nothing happened. (If it matters, I have no weapons equipped.)
I've tried deselecting and selecting, stopping and restarting the attack, changing my stance, and relaunching the client. None of that worked.
I don't know if it's only this creature or everything, but the point is, the problem is there.
One would think that a game with monsters to fight, even when fighting is not the entire point of the game, would at least allow a player to attack more than once or twice.
When I caught this in the tutorial thing, the planeshift client froze (but the music kept playing) and I couldn't do anything other than a hard reboot because it was running fullscreen. (A mistake I will not make again, I now run it in an 800x600 window so I can at least wait for it to crash.)
I've tried everything I've found in the forums, everything I can think of from past experience, and now I figure I may as well ask about this annoyance. I know the best thing to do is wait, but problems don't get fixed if the developers don't know about them.