[wp-trac] [WordPress Trac] #45253: "Unhandled promise rejection" in 5.0-RC1-43944

[WordPress Trac]

#45253: "Unhandled promise rejection" in 5.0-RC1-43944
--------------------------+------------------------------
 Reporter:  jsmoriss      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Editor        |     Version:  5.0
 Severity:  major         |  Resolution:
 Keywords:                |     Focuses:  javascript
--------------------------+------------------------------

Comment (by jsmoriss):

 FYI - When clicking "Update", the following two requests are made:

 XXX.XXX.XXX.XXX - USERNAME [01/Dec/2018:16:54:25 +0000] "POST /wp-
 json/wp/v2/pages/1086?_locale=user HTTP/1.1" 200 4514 "http://XXXXXXXX/wp-
 admin/post.php?post=1086&action=edit" "Mozilla/5.0 (Macintosh; Intel Mac
 OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0"

 XXX.XXX.XXX.XXX - USERNAME [01/Dec/2018:16:54:26 +0000] "POST /wp-
 admin/post.php?post=1086&action=edit&meta-box-
 loader=1&_wpnonce=396c1f7c35&_locale=user HTTP/1.1" 403 2923
 "http://XXXXXXXX/wp-admin/post.php?post=1086&action=edit" "Mozilla/5.0
 (Macintosh; Intel Mac OS X 10.14; rv:63.0) Gecko/20100101 Firefox/63.0"

 Note that this is a password protected test site running WP 5.0-RC2 and
 WPSSO, nothing else.

 A different password protected site running WP 4.9.8 with Gutenberg 4.6.1
 runs just fine.

 js.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45253#comment:5>
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