Users with "Contributor" role can't save initial draft with JavaScript disabled

[foofy]

Users with the "Contributor" role can't save a new post as draft with JavaScript disabled. They can Submit for Review or edit existing drafts, but they can't post that initial one.

This doesn't seem to be a problem with any of the other roles.

I'm not sure if WordPress requires JavaScript support now, but if it does, shouldn't it check for it? I don't submit tickets so please delete (with my apologies) if I missed something or this is a known issue.

Steps to recreate

• Disable JavaScript in your browser
• Log in as a user with the Contributor role (doesn't seem to affect other roles)
• Go to Posts > Add New to create a new post
• Hit "Save Draft"

What happens

Post edit screen reloads with the title missing. Draft post is not created and the preview link does not work.

What should happen

A new draft post should have been created.

So far I have determined that the post is actually being created, however the post status stays as auto-draft.

logic: If !autosave && status == 'auto-draft' then status = 'draft' in edit_post()

post_new creates auto-draft post. admin_ajax converts post_status from 'auto-draft' to 'draft'

copied same logic to edit_post() for js-disabled draft saves.

(In [14551]) Handle manual saving of auto-drafts for Contributors without JavaScript. props jbsil. fixes #13133

(In [16761]) Move [14551] to after the is_wp_error check. see #13133, fixes #15511, props alexdunae.