WowAce

What steps will reproduce the problem?  What is the expected output? What do you see instead?
Activate the GCD module.  Take a prot warrior and spam devastate on a target dummy (using a 1h & shield).  Notice the GCD timer functions properly.  Now activate heroic strike whenever you have enough rage, while spamming devastate.  Somehow, HS is interfering with the GCD display, causing it to disappear.

What version of the product are you using?
v0.1.0 (r17 downloaded 2009-05-25)

Please provide any additional information below.

This only seems to happen on the warrior, as prot.  Not really sure why that is.  HS spamming does not seem to cause an issue as arms (spamming sunder armor).  This does not seem to be an issue on other classes.