Hi,

With the latest version of InDesign v16.0.1 running on macOS Catalina, a strange phenomenon appeared. When "Overprint Preview" in switched on displayed colors change. Oranges become reddish. When the images/vector graphics are checked in Photoshop or Illustrator they look OK.

When Overprint Preview is OFF, colors are displayed correctly. But when OP is turned on, they change. Most drastic change takes place in the orange-red region.

Attached are two screen shots.

Bet regards,

Refik Telhan
rtelhan@icloud.com