Chest armour vanishing when going into maps

I am currently playing a lvl 91 Ritualist, after attempting to kill Olroth on difficulty 3 I failed and respawned in my hideout without my chest armour. I relogged and it had came back, I was reworking my passive tree and once I was done I opened a map. I started running the map and noticed I had 72 unused spirit and saw that it had vanished again. I relogged and it once again came back.
I have since removed all items and skill gems from my character and placed them in a stash tab. I am guessing that somehow my save file on your server has somehow become corrupt and am hoping that by removing all my gear and placing it in the stash that it may resolve said issue. I do not know the save log refresh schedule on your servers.
My chest armour is The Coming Calamity corrupted with 3 sockets and has lvl 18 heralds with 35 to all resist and 67 to max life. on relogging some of the supports in the heralds vanished.

Hope this aids you in tracking this very odd issue and resolving it. let me know if I can provide any other information.

Hans.

Ok, after further investigating this issue myself I think I found the cause. If you use support gems in the heralds provided by the Coming Calamity chest armour and they have a spirit cost such as Clarity, Precision and deadly herald the armour vanishes on map entery and deletes the support gems upon relogging and the armour coming back. I now use supports that have no spirit cost in my heralds provided by this unique and it remains on my character as it should.

Hans