Also happens when bag is bag slot instead of on bank

I am surprised as you are, but they do not (currently). Tried it manually.

But they do fit in it right? I got the lists for that from wowhead. It will put as many items that fit into the special bags as possible to optimize bag space.

https://wowwiki-archive.fandom.com/wiki/Enchanting_bags "As of Patch 2.3, these bags can now carry oil, elemental essences, motes, primals, and other items made through enchanting, including rods." looks like it's a blizzard bug. I've removed the motes and primals, hope these are the only ones affected.

well, I can remove them. They're also on the lists for all the other special bags I think. Do you know if they can't go there either? And if it applies to other items besides motes and primals? There's a surprisingly large number of seemingly unrelated items on those wowhead lists.

Oil does not go into the enchanting bag either currently. Your addon has is it right. Works perfectly now, thanks for fixing.