After updating to Pro, the REST API save endpoint at /wp-json/themeco/data/save returns ‘No handler registered’ for document type requests.
Saving through the Cornerstone editor UI works fine, but programmatic saves via the REST API fail.
This broke between 6.7.x and 6.8.1, most likely this update in 6.8.0: ‘Preview based settings code moved out of preview to App’
Can this be fixed in the next release or can you advise on a work around?