Hi all, thanks for the ping. After checking in, it seems like the team has this bug (from when the thread went up in Jan.) and they have reproduced the issue. They are working on a fix now. No ETA at the moment, but the bug is actively being worked on.
I have done further testing and found a way to reproduce this bug. It happens regardless of whether you have addons enabled. When you open a crafting interface (such as a Blacksmithing Station) you lose the ability to remove equipment from your Companions. This also occurs when you talk to a Deconstruction Assistant. I found that an easy way to fix this is to open your own Inventory screen. You don't need to equip or unequip anything from your own character; simply opening this menu will unlock the ability to unequip items from your Companions. @ZOS_Kevin