Attack just stops working? Anyone else?

[Ravager]

This happens when you use a /target macro and then click on a new target without first clearing your target by hitting escape.

Happens to me when I use my hide macro to see if I'm hidden then click on a new target. Also, for casters, when this happens, the hp bar doesn't go down even when your nukes are landing, you have to clear and retarget to get the correct HP.