Script editor cursor incorrect colors & incorrect hints (using wrong theme?)

I’m not exactly sure how to describe this bug, but it seems like the wrong theme is used for the cursor and hint colors. In one script tab I have a proper cursor color, but the hint is broken in both.
The cursor should always be white, since you can’t see the black cursor on a black background.

See in this video, one script tab has a proper cursor color but the other does not:

I haven’t seen this before today so it might be a new bug. Windows 10!

This bug seems to be present outside of the script editor as well