I have also created the same issue here: https://community.shopify.com/c/customers-discounts-and-orders/fulfillment-status-field-on-orders-endpoints-is-returning-0/td-p/2146943

At approximately 1am CEST, we saw requests from our Shopify apps using the /orders REST endpoint failing: we were receiving 0 orders We figured out that removing the `fulfillment_status` field from the filters entirely resolved the issue. Originally,...