Here we all understand that formatter behavior changes (both new functionality and bug fixes) are not welcome in the context of change management. Those are conflicting goals. And our competition doesn't sure do any better.
The good news is that we're working (short term) on a way to let you pick and use an older version of the formatter, in order to keep a constant behavior. And at any time you will be able to upgrade to the latest the greatest version at the moment you see fit.
Andre