Dark mode, text not showing

Hi All

I’ve seen a lot of discussion about a known fault (I think fixed on newer macs running Big Sur) but I have an older Mac, running on High Sierra, and I’m having this problem. When I try out either either the solarized dark mode, or the midsummer night mode, my text becomes invisible to see. Is there a fix for this? (I’m running Scrivener 3.2.2, which I think is the latest version).

I should add, it works fine in full screen composition mode. It looks beautiful in fact (I particularly like A Midsummer night), but in the “normal view” I just can’t see the text at all.