So I got my new MBP and that forced me to update to Catalina. So far it appears I’ve been lucky (hope that didn’t just jinx it). One strange issue has popped up though. Sys Preferences is showing a badge. The badge comes from Software Update. However, when I run that it reports 10.15.4 and nothing to update. But the badge persists.
At first I thought this might be related to having stopped Catalina nagging on my previous Mojave MBP (from which I migrated). So I went back to check. Indeed
sudo softwareupdate --reset-ignored returns an empty list. Even
softwareupdate --list shows that there remains nothing to update.
Any ideas why the badge refuses to go away?