alphaArgon

Push Button bitmaps in SystemAppearance.car could not be perfect replaced

3

Dropping a bitmap of same size to replace with leads a weird text position; even dragging the original one out then back.

Add shadow back for blurred/transparent window on macOS

10

Closes #15383 Closes #10993 `NSVisualEffectView` is an official API for implementing blur effects and, by traversing the layers, we **can remove the background color** that comes with the view. This...