Default prompt values not working

Good morning,

I created a dashboard prompt that filters the values based on a query and works fine but I'm struggling to set the default values.

In fact, even if I set "All column values" as default selection, when I open the dashboard only the first value of the list is selected.

However, if I then click on "Reset to default values" then all values are selected.

Is there a way to make sure that the defaulting works immediately without having to reset?

Thanks a lot for your help,

Andrea