I had a few students using Windows 11 in dark mode, the code window was odd looking, the textbox itself was in light mode, but any keywords highlighted were in dark mode (i.e. the text was black-on-white text, but keywords would be color-on-black). Switching to light mode fixes it. I'd imagine it's not a PyBlox specific bug, but it might be worth seeing if there's a known issue (or new version) of darkdetect or similar.
I had a few students using Windows 11 in dark mode, the code window was odd looking, the textbox itself was in light mode, but any keywords highlighted were in dark mode (i.e. the text was black-on-white text, but keywords would be color-on-black). Switching to light mode fixes it. I'd imagine it's not a PyBlox specific bug, but it might be worth seeing if there's a known issue (or new version) of darkdetect or similar.