Hi @Inélsòre,
Sorry to hear you've started experiencing the issue again. Would you mind telling us the exact version of InDesign? Is it 19.2 or 19.3? Is it possible for you to record a video of the issue and share it with us for investigation purposes?
We will try our best to investigate it further with the team.
Thanks,
Harshika
I believe I owe everyone an apology, since it seems not to be InDesign at fault here, but an app I used to rely upon back on my Intel Mac, AppTamer.
This app slows or stop apps not being used actively to optimise energy consumption. It's a great app for Intel Macs and it helped my ageing beast survive a few hours more on battery. On Apple Silicon, though, this is close to useless and, discovery!, I've found that it had set InDesign to be stopped completely when not in front, instead of just slowing it down if—when not in front—it's consuming too much energy.
I have turned all this off for now, and it seems that InDesign is back to working as expected.