getShopReceipt status filter not working properly

[Seperenstan]

I'm trying to retrieve only the currently open Receipts in my store with the getShopReceipt endpoint.
For that, I'm trying to pass the status as a parameter.
However, independent of what I pass as a status, I always get a wild combination of Receipts.
For example:

def get_receipts(params,save=False,shop_id=shop_id, access_token=access_token, x_api_key=etsy_keystring,output_file="EtsyOrdersTest.json"):
    url = f"https://api.etsy.com/v3/application/shops/{shop_id}/receipts"
    
    headers = {
        "Authorization": f"Bearer {access_token}",
        "x-api-key": x_api_key
    }
    
    try:
        response = requests.get(url, headers=headers, params=params)
        if response.status_code == 401:
            new_token = refresh_old_token(token)
            access_token = new_token["access_token"]
            headers = {
                "Authorization": f"Bearer {access_token}",
                "x-api-key": x_api_key
            }
            response = requests.get(url, headers=headers, params=params)
        
        if response.status_code == 200:
            print("Access granted. Response received.")
            if save:
                with open(output_file, 'w') as f:
                    json.dump(response.json(), f, indent=4)
                print(f"Response saved to {output_file}")
            # Return the response data as json
            response_data = response.json()
            return response_data
        else:
            print(f"Error {response.status_code}: {response.text}")
    
    except Exception as e:
        print(f"An error occurred: {e}")
        
        
      params = {
        "status": "open"
    }
    get_receipts(params, save=True)

returns a json containing the following receipt:

"status": "Completed",
            "formatted_address": "removed",
            "country_iso": "removed",
            "payment_method": "removed",
            "payment_email": removed,
            "message_from_payment": removed,
            "message_from_seller": removed,
            "message_from_buyer": removed,
            "is_shipped": true,
            "is_paid": true,

I also get complete orders when filtering for paid, so at first, I thought it was how the logic is handled internally by Etsy: E.g. Each complete Shipment is also paid, therefore one is a subset of the other.
However, there should be no logic where "open" is a subset of "complete" as seen in the example above.
Am I doing something wrong when trying to retrieve all open orders filtered by status, or is that an error in how Etsy handles my request?