Trying older things -- Racket 6.7 on macOS 10.11.6 -- I see only a hint of this.
I do see the white rectangle (to the right of "MB") get left behind on the desktop when the window is shrunk. But: - I have to drag the window _up_ (not to the left). - I see only _one_ such "dropping" (not a trail of them). - It disappears when I release the trackpad a.k.a. mouse button (the desktop is clean once the resize completes). I definitely don't get the full "ooh is this some DrR advent calendar easter egg" effect in your PNG. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.