Pixelated GTK4 and Mutter GNOME 44 window buttons

[RAinb0wStAr9938]

Here's a picture of the issue:

Edit 1: Try opening a GTK4 or LibAdwaita app using this theme and see for yourself.
Edit 2: I think it might be a problem with the png window buttons. Try making them at a higher resolution.
Edit 3: I think it affects all of your Sweet GTK themes