Bug Error Using Quick Edit (on Posts with Tags)

I wouldn't think that it's a quick error specific error. With regular posts and replies, I've had this same "MyBB Internal: etc" error except in an otherwise blank page when posting. In quick reply, I've had the same as Kat's message once, but usually it works fine, just like with regular posts. And in all cases, for me at least, it does post the updated post.