We were testing a new app that uses the Webhook to get orders and line items.
The Sandbox seems to be having issues responding to our Webhooks. Some Updates and Creates come through but not others.
I tested this with an app we wrote some time ago and it too has this issue on the Sandbox.
I then tested this with a published version of the app we wrote a while ago and it worked fine.
It's hard to pin down exactly what is failing as we can't debug the flow.
