We confirmed that the 60Hz version MODEL A2119 EMC 3279 works fine. The offending Apple dongle is MODEL A1621 EMC 2877 which is the obsolete model.
Please upgrade the Apple dongle to overcome the issue.
Adobe InDesign team
An error occurred while saving the commentJeroen Schuiten commented
Same issue here in Photoshop, Illustrator, and Animate CC
macOS Mojave v10.14.5Jeroen Schuiten supported this idea ·