Mac visual studio isn't visual studio, it's something else that they stuck the label visual studio on. They are about as related as java and javascript (which are famously, related as car is to carpet)
Have you tried VSC for C# (yes asp core). The debugging is just broken. I would not recommend any sane person using VSC for C# related large project development.
IIRC the last couple of releases had some new/overhauled features they said were built for both from the same code, so they seemed to be starting down the path of slowly converging them, before they changed their minds and discontinued the Mac version I guess.
