Heralds granted by the 'Coming Calamity' chestpiece bugged

Heralds granted by the 'Coming Calamity' chestpiece don't count towards active heralds for the 'Coming Calamity' notable

In addition, the Herald of Ash part of it is disabled, taking it on and off causes client crashes, and attempting to socket anything into herald of ash also crashes the game

The herald of ash component being disabled seems to be caused by the fact that the strength requirement isn't being met

I can confirm that I have experienced the following with "The Coming Calamity" armor:
1) All three heralds have stat requirements and you are unable to socket gems unless you meet the requirements.
2) If you meet the stat requirement and socket a gem into the herald, it will crash the game within a few seconds.
3) Equipping the armor and taking it off can also cause your game to crash. (The last crash I had from this was taking the armor off and putting the "Sands of Silk" armor on to double check if the Blink skill granted by that armor had a stat requirement (it doesn't). After putting the armor back on, my game crashed after a few seconds.)

The herald skills themselves DO work and you can see they are active by toggling the "Show Aura Icons" setting under Gameplay in the Interface tab of the options menu.

I cannot confirm whether the "Coming Calamity" notable works or not as I am currently too far from that node and allocating it on my necklace is far too expensive at the moment.