ZZ:

You didn't answer the question.
What version are you using? If it's the current version and the current "build" then there is definitely a problem.
However, since you've had problems for some time, it's surprising that you haven't just found another program to do your notation.

BIAB has never touted itself as being a notation program, that's just a bonus feature included for general use and simple arrangements. For that it works quite well and meets the needs of many users.

Let us know if you'd like some help trying to sort out your problem, or if you just needed to "vent".
LLOYD S