Reporting... count items per month (unique field)

Hi there,
I try to do a report with leads identified by month… but fail. I have data for all last 12 month. But the newest month shown to me is Jan’23.

I setup the report this way:

Is there something wrong with my configuration of the chart?

The respective view shows the correct test data:

Switch this to the saved view (new) in your other screenshot.

Tried this as well… doesn’t change the diagram unfortunately. I starting to think this is a bug?

Is it grouped by a date field?

Yes. Its grouped by month … own Date Field “identified”, by month.
Oldest first, top 12 should give me the last 12 months, correct?

image

The 19 as for Jan’23 is correct… its just not showing the right months.