White corner in full screen on Mac

[nolantia]

I use a ayu theme. And I ran into a strange problem - corners in full-screen on Mac are white (only ST4).

I want to solve the problem but I can’t find the documentation. How can I change the corner in a theme?

Thanks

[shushustorm]

Facing this as well, only using ST4 as well. ST3 doesn’t show this. Would be great if this could be solved.