please fix tempo slider

After installing the latest BB Manager update, I find that the midi tempo overrides the tempo slider. So if I set a new tempo for a song, as soon as I change the beat (transition or fill) the beat reverts to the base tempo.
I use the tempo slider a lot when trying to find appropriate beats for songs, and it is now as useful as a chocolate fireguard.
Can we please have a setting to allow the tempo slider to override the midi tempo?