(in my advanced age) I forget which one I'm on and where/when the track will end. I'll just be wailing away on a great tune and ...boom, it stops.
One solution to not knowing when your backing track will stop and out of the blue "boom, it stops", is to place something notable in your backing track just prior to the ending. You could insert extra drums, crash cymbals, guitars, etc in the last set of bars. When playing live, this will alert you that the eding will soon arrive.
You can also play around with the "Ending Options" within BiaB to achieve a similar effect. There is lots of flexibility in these settings.