new post draft not preserved when submission fails

[r00t2]

one of the worst user experiences is when data entered into a browser is lost and has to be re-entered.
wordpress normally avoids this in the post editor by storing the draft both server and client-side, and offering to restore it when the same post is edited again.

but this does not seem to work on initial creation of a new post in some corner-case(s).

steps:

• log out
• open two windows/tabs with /wp-admin/post-new.php , they will redirect to wp-login.php (no link is provided to not-logged-in users, but assume it's bookmarked.)
• login on both of them (note: this leads to the second login invalidating the first one, or at least it's xsrf token, that may or may not be a separate bug.)
• in the one where you logged in first, draft a post and click publish.
• you are redirected to the login form, or shown an "The link you followed has expired" error message

expected result:

• after logging in, the draft content is published or preserved

actual result:

• you are redirected to a blank editor, the draft is lost and one you have to restart from scratch (neither re-submitting nor back-buttoning to post-new.php helps)

(the draft could not be stored server-side due to the invalid session, and the client-side mechanism does not catch this case either, the generic pattern to pass all form fields through the login process on a POST with no valid session is not used.)

[r00t2]

this seems to be similar to https://core.trac.wordpress.org/ticket/27916 (which is ten years old and unresolved)

[hellofromTonya]

Hello @r00t2,

Welcome to WordPress Core Trac.

Yes, the issue you're raising is the same / related to #27916. To keep the discussion in one place, I'm closing this ticket as a duplicate of that one.

Thank you