I would assume someone reported this to you, but a search didn't bring up the topic. Some buttons don't render until you mouseover. There is no separation between the rightmost button and the minimize button, though in the demo I managed to by the right pixel to move the window (usu. I can't). I haven't been using VSC long enough to know if this ever worked properly in DF. Look at this video and tell me how, and if, you want me to proceed.

Indeed. When I changed the theme in VSC, the caption buttons became visible. Perhaps a theme with a background color instead of transparency might be an enhancement? (Getting the theme is use of specific programs would be a hornet's nest.)

Ah, using the Aero theme works both for dark and light mode in VSC. I get what you were saying. I'm making changes now. Thanks.