This is a fairly minor item, I noticed it only when looking back at a post and wondering why it had a single-word title.
When a post title contains a double quote ("), nothing after the first such quote is added to the "Body Title Single Pages" and "Body Title Multi Post Pages" fields in the Atahualpa Post Options.
I have not experimented with whether it'll correctly save those fields if the full post title is pasted in, I'd already changed things to use a single quote/apostrophe before I figured out what was really going on.