There's a noticeable border when maximizing the app

[KiKaraage]

So here's how the Tweaks app (0.2.1) looks when maximized, there's a noticeable border:

Compare it with another Cosmic app like Settings: (seamless blend with the panel)

Or a generic GTK app, Chromium: (Can't really set it to be pixel-perfect blend with the panel, but at least there's no border)

Hope it can be fixed in Tweaks!

[edfloreshz]

I have not added any custom borders around the app, might need to update libcosmic.