Diablo® III

If I understand the design correctly, Mirror Image is intended to act as an 'oh !@#$' button to break out of crowd control statuses, similar to Serenity from Monks, and WOTB from Barbarians. I do notice that the Mirror Image skill button is active(alongside diamond skin) while under CC effects, but am however, unable to activate the skill to break out of cc in some circumstances.

I have observed this 'bug' while playing in PvP. Mirror Image does not work when you are feared. I can confirm that it is working for the Stun cc, but it does not seem to be working on other cc.

Does anyone else have similar observations?