The issue I’m having concerns the Staff page of the Score Editor settings window.
Look at this screenshot (took to Cubase 10.5.20):
Do you notice the black boxes? Why isn’t there any text showing? (as it’s the case with the screenshot below, took to an older Cubase version):
I’ve checked this issue on a fresh install of Cubase 10.5.20, on a second Macbook Pro (13-inch, 2018, Four Thunderbolt Ports), and the problem persists.