I left this comment on another post about the same thing , which is exactly the same as the issue that happened with 10.7.4.
Annoyingly, I now can't even find a working version by trying to roll back to any other version on https://aka.ms/rdmacbeta. Not sure if it's because I still have the broken 10.7.7 (2000) version installed (but not running), or some preference file somewhere, or what.
The best I can get is to turn off multi-monitor support and choose "update the session resolution on resize" which at least gives one usable screen. But it's not conducive to being able to do my work usefully, and it's incredibly frustrating.
I think I need to never update this app in future, because the updates can't be relied upon even by the time they get into the App Store, and it breaks my ability to do my job for a week each time.