Search function of Calendar.app does not work after Save Boot
When I restart my iMac-24 (M1) with Safe Boot (no "external" extensions loaded), the Search function of Calendar.app (searching for text strings in calendar event entries) does not work. The side bar on the right appears, but nothing is found/listed no matter what I search for. When the Mac is bootet normally, Search works as expected.
Is this the normal way that Calendar should work?
Or is macOS 12.1 somehow broken on my iMac and needs a re-install?
iMac 24″, macOS 12.1