I’m having constant issues bringing InDesign to focus on my Mac running Big Sur - now with InDesign version 2022 but the last few versions, same.
When I use command-tab to invoke the Mac application switcher, InDesign won’t come to the front. All the other apps do respond as expected.
When I click on InDesign on my Dock, sometimes the InDesign menus appear at the top of the screen but the already-opened document does not come to the front. Sometimes InDesign completely ignores the click. Sometimes I have to click a document window of another application, or click on my desktop, then click back into a visible part of an open InDesign document to bring it to focus. Sometimes I have to invoke Mission Control to get back to my open InDesign document(s).
None of this is a hard stop, but it’s incredibly annoying.
Or I'm wondering now if it's something to do with InDesign Preferences>Interface
Maybe turn off Enable MutliTouch Gestures
And see if setting the UI scaling to small or large makes a differences.
For InDesign you could try
There's a few fixes you could try that I have saved for situations like this
Try resetting your preferences: The easiest way to reset everything is to delete the InDesign preferences: as soon as InDesign starts to boot hold down Shift, Alt, Ctrl (and Apple/Cmd if working on a Macintosh). A dialog will appear asking to delete the InDesign Preferences, select 'Yes' on this dialog. Further info and instructions here if needed: https://helpx.adobe.com/in/indesign/kb/indesign-preferences-support-file-locations.html