Editor plugin doesn't render when creating a new post of a custom post type

[jbeales]

When I go to create a new "Book" post on my site, my book custom post type, I get a red banner at the top of the editor that says "The "webmention-editor-plugin" plugin has encountered an error and cannot be rendered."

Digging into the Javascript console I see the message "TypeError: can't access property "webmentions_disabled", r is undefined" which, since it's Javascript must come from this line of the Editor plugin. I'm guessing that the meta variable isn't set on CPTs, or at least on my CPT.

I'm too out of the loop at the moment on developing for the new editor to send over a quick PR, hopefully someone else can pick up where my expertise ends and get this fixed!

[jbeales]

Update: This only happens when the CPT does not have the support the 'custom-fields' feature. If 'custom-fields' is supported by the CPT the meta variable is set in JS and the error does not happen.

[krafit]

I ran into the same issue with WP 6.8.1 and Webmention 5.5.0 🥲