Pie Chart Radius Size is Changing When Data is Changing

I added 3 pie chart to my dashboard.

When I change the time range and the data is changing, the radius of the pie chart is changing.
I didnt see any reason (It is not like one day the data is very long and another is short…)

Is there a way to define a constant size? I want all the chart will have the same size and that size will not change.

I am using hosted grafana.

Thank you!

example 1:

example 2:

example 3: