After the mission "The Eye" and after the mission right after, I spoke with Isgrim in the Nexus and went through the default conversation and wanted to talk to him about his armor, but once he got through the first conversation, I can no longer talk to him. I've done 2-3 missions since then, assuming it would reset like a couple of other NPC problems have, but he's still completely stuck.

This sucks as I have his next level of armor crafting and because of this he's not as useful as a tank anymore in addition to blocking out his story. Do I need to do a specific thing, or is it just broken? Any assistance in figuring this out would be appreciated.