Om du använder InDesign så skall du INTE uppgradera till High Sierra macOS 12.13. Du kommer du få problem med muspekaren.
Macpatrics råd kan du läsa om här
Så här skriver Adobe om InDesign och High Sierra-kompatibilitet
Cursor appears as pixelated box
When you work with InDesign for some time, the cursor may appear as a pixelated box. You may wish to remain on an older version of the OS that is compatible with the current version of InDesign to resolve this issue. Our engineering team is working with Apple to correct the root problem as soon as possible.