Problem with graphics

hey guys does someone know what happens with my Mac when I drag something?
thank you.

Hi Daniel-

It would probably help to post the 3dm file in question. You can attach the 3dm to a reply by just dragging it onto the reply area.

It looks GPU related. Can you please provide some additional information? Please navigate to Rhinoceros > About Rhinoceros > More info… > Copy to clipboard and paste the content back into a reply here.