Update button not working on certain posts

For some reason, some of my posts will no longer update. The button is there, but clicking it does nothing.

It’s only certain posts. It is a CPT with custom fields, but posts under the same CPT with the same custom fields do update.

Chrome shows the below error associated with post.php?post=171997&action=edit:1 – it appears right after clicking the Update button:

An invalid form control with name=’xmlsf_priority’ is not focusable.

Oddly, my test site with identical theme, plugins, etc. works just fine.

Wordpress 5.2

• This topic was modified 7 years ago by randy394.