Since today's minipatch, the icon for the Fulgurant Strike skill remains grey, as if it's requirements aren't met.
It still works as before and you can still see the cooldown expiring, so it is not a biggie.

Also, the animations for Fulgurant Strike and Helm's Hammer have been mixed up. Fulgurant Strike has the kick icon, Helm's Hammer has the kick animation. Surely Helm's Hammer should be something more dramatic then a kick in the knees?