Apparently using `.glassEffect()` on the window background will break the functionality of the `.onDrop()` modifier.

I wanted the Liquid Glass effect on the window background of my app, so I added the `.glassEffect()` modifier which worked, but then I could not drag-and-drop files in the infinite canvas anymore…

Turns out that you need to use the AppKit class called `NSGlassEffectView` instead. Now the `.onDrop()` modifier works again.

https://developer.apple.com/documentation/appkit/nsglasseffectview