Radio buttons selected by default (bug)

I have a form where I do not want the radio buttons to be preselected.

But atm the ones with value “0” are pre-selected.

I have ticked the radio button per field that there should be “No standard”.

Even if I select the option that the answer with the value “1” should be the standard it just selects the answer with value “0”. So I assume it is a bug.

I need the value fields for calculating if the majority of the answers is yes/no.

How can I set the radio fields not to be preselected?

https://wordpress.org/plugins/caldera-forms/