This is used by the Open 1Password Bookmark action. Even if you don't use 1Password, the action is probably created by the action selector in the editor, and hence looks for the 1Password export file (which is a file that 1Password creates which documents the 1Password bookmarks without revealing the sensitive information).
And this is why I have not found and killed the bug yet. Without a way to reproduce it, it is very hard to figure out.