Chrome isn't playing nice with the gaps

[Blaqwood]

I'm using 13px gaps in aerial.

Below there is a blue bar(the same colour as window's accent colour) at the top of the chrome window

Edge also has something similar happening, but it just stretches the window where chrome would have bar.

Is there something I can change with chrome or aerial to fix this?

[djsime1]

Also occurs with Firefox, very strange.