I got my very first storm dragon on the weekend, very cool.  Almost a bit OP, but very cool.  The problem is that they cast fear in the first turn and after that they can move, but no attack icons come up.  I have to hit space bar to skip its first turn and next turn I can use its attack abilities.  This happens for me in every battle.

Also, when you use the sweep attack, it takes about 10 seconds after the tail moves before the damage + animation on enemies occurs.

And when the AI uses storm dragons, they don't use its abilities.  I had a storm dragon surrounded by 5 melee units.  It should have used sweep, but it was just attacking a single unit at a time.  It also never used the fire attack.  Of course if it was using its abilities, I would have never taken it down, so I'm not sure I should complain