I have bad experience with Catalina hack with my MacPro3,1. But that's a hack so I can't really be too angry with things don't work out.
My MBP mid-2012 is officially supported and the update is officially approved.
It took forever to update and when it's done the system is crawling and worse the system refuses to charge the battery.
I re-install the macOS hoping that it may correct something. I started the re-install in the afternoon, maybe around 4PM it just won't finish, and at 6AM the follow day it was still updating.
When it finally finished, the same thing. The system is crawling and the system refuses to charge the battery.
I think this is the worst ever upgrade I've ever experienced.
