The dialog boxes don't appear when expected, (I think they are behind the main viewing window of the app) until i do a 'mission control' on the trackpad and then release it - then the dialog box appears. It's not handy at all and I only found out by accident as the box can sometimes appear on the laptop screen and not the secondary bigger screen i use.

indesign 20.4.1
24th July 25

happens when saving or adjusting, any time a dialog box should appear - including looking at the 'about indesign...' info!