Put simply, Shortcuts for Mac is in limbo right now. The good news is that it is improving a lot in the betas and every sign we can see from the outside points to the fact that the Shortcuts Team is aware of these issues and working on them.

My experience is being quite good. It’s true that I only use a couple of Shortcuts in Mac, but they’re quite complex (one of them finds due items in Omnifocus and sends them to my calendar; the other one runs javascript to convert numbers into letters) and they’re working fine.