Is it expected behaviour that autocomplete doesn't react on '@' for property wrappers?
Autocomplete Property wrapper
I tested with other attributes, as @available, no auto completion. So that seems to be a present limit of autocompletion. You could file a request for enhancement.
After returning to xCode after 20 min break, I have tested @FetchRequest and it worked. And then immediately stopped. I think it’s a bug.
I have the same issue, in both, my i9 and M1