FilterForm inspect strange behavior

filter_form = FilterForm.new(Property)
{filter_form, group_id} = FilterForm.add_group(filter_form, operator: :or, return_id?: true)
filter_form = FilterForm.add_predicate(filter_form, :id, :eq, nil, to: group_id)

IO.inspect(filter_form)

%AshPhoenix.FilterForm.Predicate{
  id: "0b9cab33-2194-475e-a010-407d5964a8ec",
  field: :id,
  value: nil,
  transform_errors: nil,
  operator: :eq,
  params: %{
    "field" => :id,
    "id" => "0b9cab33-2194-475e-a010-407d5964a8ec",
    "operator" => :eq,
    "value" => nil
  },
  arguments: %AshPhoenix.FilterForm.Arguments{
    input: %{},
    params: %{},
    arguments: [],
    errors: []
  },
  negated?: false,
  path: [],
  errors: [],
  valid?: true
}