Urgency of tempo problem

The fact that MS3, buggy or not, interprets tempo changes differently than does MS2 means that I cannot use it for any new scores, or even adjust old scores to play properly in it, because as soon as the bug is fixed they will break (i.e., the tempos will be misinterpreted in the other direction). For that reason, I would like to urge the tracking-down and fixing of this bug with additional urgency. I can't really post new scores with managed tempo (nor can anybody else, even if they don't realize it). Being able to play MS2 scores properly is of singular importance.