Maggi,   Thank you for reporting this issue. I can confirm this is an existing bug. I've informed the team who maintains this feature and have provided them the details you sent me. The team is working on a fix, and we'll get back to you once it has ...

Hello stickfigure,    I checked with the team behind Fulfillment services and they found that Shopify is not rapidly calling any of your callbacks at the moment, but at one point we did attempt to send you about a thousand fulfillment requests betwee...

Hello Maggi,   Can you confirm whether you are re-ordering product images using the Shopify Admin (your-shop.myshopify.com/admin/products/:product_id) or if you're using the API?In any case, can you let us know the myshopify.com domain of the shop yo...

Hello stickfigure,   I had a look at API call activity from your app to that shop, and I can confirm you made about 106 thousand API calls for fulfillment orders in a roughly 10 hour period that were throttled and got a 429 response.   Over the same ...