I have missed calls notifications/counters, as well as for sms, placed on my lock screen and my home screen.

Both was working fine: if there was more than 0 missed call/sms it was displayed on the lock screen, otherwise nothing was shown. On the home screen it’s similar but sms will always show the number of unread messages, also if it is 0. Perfect.

Version 10.5.2_(r1850) was the last working version. Since then every new version broke this feature when upgraded. So I downgraded again, this brought back the expected behaviour, and skipped a few updates. Today I again tried the latest version to see if this got already fixed, unfortunatelly it is still broken.

The behaviour is now (for any release after 10.5.2_(r1850)) following:

SMS work fine on both, regardeless if 0 should be displayed or not.

Missed Call will always show 0 also if it should get purged. If going into settings and exit them again it will work, until next reboot after which the 0 missed calls gets displayed again.