Safari error on using metabox plugin

[karmatosed]

After talking to @youknowriad this is a new issue potentially and not #3934.

This happens and the following is the error:

TypeError: undefined is not an object (evaluating 'this.editor.isDirty') value — index.js:6:17082 value value — index.js:6:21566 d — react-dom.min.3583f8be.js:143 e — react-dom.min.3583f8be.js:143:183 g — react-dom.min.3583f8be.js:144:237 commitDeletion — react-dom.min.3583f8be.js:147:393 b — react-dom.min.3583f8be.js:155:337 t — react-dom.min.3583f8be.js:167 x — react-dom.min.3583f8be.js:166:249 r — react-dom.min.3583f8be.js:164:370 enqueueSetState — react-dom.min.3583f8be.js:124:388 setState — react.min.ca6e2421.js:18:111 onStateChange — index.js:6:82903 [native code] notify — index.js:11:13300 notifyNestedSubs — index.js:11:13834 [native code] onStateChange — index.js:6:82929 [native code] l — index.js:6:84602 initializeMetaBoxes — index.js:11:53083 (anonymous function) — post-new.php:2114:85 promiseReactionJob

[karmatosed]

This works right now so closing the issue. Potentially this was my build broken, as it was this morning.