I think that PG Music have at least 3 take aways here.

One: fix what they have. Clean up the bugs in their notation printing function

Two: Consider strongly working with Finale since there seems already to be some connection, to allow a seemless transfer of a BIAB song including all the elements to a superior print engine

Three: Consider providing a file, probably in MXML, that can be imported into any music software that supports the protocol for printing.

Let's hope PG Music is listening. This thread has shown that there are many of us that want to have better lead sheet printing, and we tend to agree that BIAB probably isn't the best tool for the job. Let BIAB create the arrangement, and pass off the printing to a product that can do justice to the notation

BIAB for Windows Version 2019 (643)
Windows 10 (1909)