I suspect this is down to the same root cause as
CBG-522, so perhaps doing that first would resolve this.
The "_rev" property of a document_changed webhook is empty in 2.7.0. This works in 2.6.0.
- Start SG with a document_changed webhook set up in the config
- Create a document
- Update the document
- Observe that the webhook body sent in step 3 did not contain the rev id