Creator's Guild bug?

[Elriadon]

Alright, the game is great, but I've stumbled upon a bug. It's not gamebreaking, but pretty annoying. It's the only serious bug I came across so far:

I finished Undergast's quest and got him to join me. At the end of his dialogue, I could either tell him to go to Mulandir or send one of my companions away. I chose to send Uram away so that Undergast could join me right there and then.

Now, whenever I enter the Creator's guild in Everlight while Uram is in the party, he always leaves the group for no reason and I have to leave Everlight to get him back. I think I'm pretty close to the end of the game, but this still happens.