Wrong mark for events

[buchnerh]

I have entered events for let's say 01.09.2023, 02.09.2023, 03.10.2023 and 04.10.2023 in the calendar-app.
When I now look into the datetime-indicator under september there are marks/dots under 01 and 02 as a mark for those two events in september. Below the calendar the two events from 01.09.2023 and 02.09.2023 are listed. This is correct and what is expected.
When I now tap on the right arrow to switch one month ahead to october the dots are still under 01 and 02 instead of 03 and 04. Below the calendar the events for 03.10.2023 and 04.10.2023 are listed like expected.
I think there is an issue that the marks/points for the day of the events are not updated after switching to another month.
Hardware: Vollaphone
OS: UT 20.04 Stable OTA-2

[buchnerh]

Now I'm on UT 20.04 Stable OTA-4 and I've seen another wrong behavior: Events from another month are displayed, what's indeed totally wrong. As you can see in my screenshots (green circle correct event, red circle wrong event) the indicator is mixed up with wrong events.