Tiny issue with application screen in Dark Mode

[WexSoft]

When running the app full screen in dark mode, there is what looks like a single pixel wide margin at the top of the screen that is not black, but more of a cyan colour. It's as if the app is not quite full screen. See image attached.

 

[Marco Kalter]

This window edge is part of the chosen style. If you select a different style, the edge will have a different color.