[Grafana 8]Annotation query displayed differently in Grafana8

Hi,

in Grafana 7.5.16, annotations were displayed as one contiguous event as long as the annotations query returned a value:

Now, in Grafana 8.5.9, I get many separate annotations over the course of the event:

If I zoom in far enough, eventually the annotation is displayed as one contiguous annotation again:

Is there a way to force the old behavior, i.e. get the contiguous display no matter what the zoom level is?

On a side note, the Y-axis is set to have 0 decimal places. As you can see in the screenshots, in Grafana 7, the grid (old Graph panel) was divided accordingly into sections that matched integer values (0, 1, 2). In Grafana 8, the grid (migrated to new Time Series panel) is divided arbitrarily into sections of 0.25, and the numbers on the axis are rounded to 0 decimals, creating a rather confusing Y axis with values 0, 0, 1, 1, 1 (which is actually 0, 0.25, 0.5, 0.75, 1).

Best regards