Calendar notifications ignoring the do not disturb focus mode

Hi all, I have an issue. When I have a standard sleep do not disturb mode, I sometimes get the notification (vibrating because of I have silence mode also switched on).

I have turn off the “time sensitive” settings as well. I thought this should silence the notifications completely. Am I missing some setting?

Thank you,

Karel

In the screenshots you can see the settings of calendar notifications, the notification I got. The alert setup in the event calendar. And setup of notifications in the sleep mode.