I perform this task regularly in my normal workflow with little problem till now.
I create a song arrangement in biab then I render it to a mono .wav file
I use the .wav for practice and performing.

This particular .wav rendered (feeling alright-dave mason) is a few bars longer than what it should be according to the arrangement.
No big deal except the at the end of the wav file, I get 2 or 3 bars of silence then a drum beat for a bar or so. Not a click track, an actual drummer. Nobody else in the band.

I attached a file of the screenshot. Perhaps that will provide a clue.
Not sure the best way to include the file

The .wav is 38MB, not unusual for my work.

I know I can chop off end with RB or Logic or Audacity. I'd rather understand why its doing it.

Thanks,

Attached Files (Click to download or enlarge) (Only available when you are logged in)
feelinalright.JPG (291.6 KB, 31 downloads)
biab2023(Mac)
Logic Pro X