Minimap on Mac is dark and flickering with classic/classic HD graphics. The issue is not there with reforged graphics, although when the game starts the minimap is also briefly dark then changes to correct colors. Full game reinstall does not help. I played around with as many settings as I could imagine related but nothing changes.
This makes it very hard to see enemy structures, as for example dark purple or dark blue is very hard to see on a darker-blue background.
This issue was reported back in Nov 24 but the thread was closed meanwhile the problem was not fixed. There are Reddit threads where Mac users report the same issue.