Terisa de Morgan, What you regarded as a bug was for me an established, rational behaviour that did what I wanted.
Prior to the bug fix, the configuration shown below was allowed, and it produced a verifiable result - i.e. the full path was put into the column specified in File Path
But since the bug fix, that configuration is still allowed, but it produces no result - i.e. nothing is put into the column specified in File Path.
In my book that's a bug. If the configuration is invalid (because there's no column specified for File Name) then the PI should issue a message when a Book is added and abort the add. If it's not invalid then it should produce a verifiable result - such as putting the file location (path without filename & extension) into the specified column. Anything, except do nothing.
BR