Since 22.2.1: Notification bell has red dot without Notifications

Hello all,

since the recent 22.2.x update odyssey I encounter a strange situation with the notification bell in the top right corner. Whenever I click on an app (Files, Pictures, Deck, Dashboard…), once the side loads, the Notification Bell has a red dot. Once I move the mouse there, the notification Drop-down is empty and the red dot gone.
When I click on the next app or reload the page → Red dot is back there again…

Can someone confirm that in their instance?

Nextcloud version (eg, 20.0.5): 22.2.2
Operating system and version (eg, Ubuntu 20.04): OpenSuse Leap 15.3
Apache or nginx version (eg, Apache 2.4.25): nginx
PHP version (eg, 7.4): 7.4

Is this the first time you’ve seen this error? (Y/N): Y, since 22.2.1

Kind regards,