Followed the sample for creating a custom shaped window here.
Added a SKView with
AllowsTransparency=true and an SKScene with
BackgroundColor=NSColor.Clear to the window.
The SKScene has an animating SKSpriteNode that runs infinitely.
The background of the custom window, SKView, and SKScene are all transparent, however the transparent areas are not click through.
The background appears transparent but responds to user interaction with the original window frame.
Is there a way to fix this?