By far, my favorite aspect of intune is the thing where, when I click the sync button in company portal, one of several seemingly random things happens:
It syncs for a reasonable amount of time, reports sync complete, and everything is synced! This almost never happens.
It syncs. And syncs. The syncing goes on, minutes stretch into hours, etc. Maybe something eventually happens, it's hard to say, we probably give up and reboot the device long before it finishes on its own.
It "syncs" immediately, reports it as successful, and nothing actually happens.
Honestly makes me embarrassed for the intune dev team. At an absolute minimum, whatever is happening in these different scenarios should provide different feedback.