Get All Deal Fields endpoint - order_nr is returned as null for some of the fields

Hi, for some of the deal fields the “order_nr” is being returned as null. This looks like a recent change as it was returning int earlier and working fine for us. But now we are running into exceptions as we are getting null instead of int.
And I see that its happening for these fields:

Please confirm whether this is a bug from your side and will be fixed or order_nr will be nullable going forward.

Also, worth noting here is that this is not happening for Organization fields.

For example, we have added custom fields of type date range in both organization and deal. And trying to get the fields of Organization and Deals. The Deal Fields return those additional fields like timezone, currency, end of reminder with order_nr as null, while the organization fields don’t return such fields.