IT FIXED ITSELF FOR ME!
Not to spoil to much or hopefully anything I had to beat Part 8/Chapter 8
This is the chapter where you join the wardens and fight one of the gods/archdemons.
AFTER THIS long cutscene you talk with everyone in the lighthouse and gain access to a special part of their skill trees. I then went to do one of their quests with them and one of my old unique boxes was glowing as were all my statues and walls!!
THANK GOD!
It won't last. Fixed it for me as well and a couple of levels later it broke again.
