[wp-trac] [WordPress Trac] #34797: WP_Query orderby broken for menu_order when posts_per_page is set

[WordPress Trac]

#34797: WP_Query orderby broken for menu_order when posts_per_page is set
--------------------------+-----------------------------
 Reporter:  dan.rossiter  |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Query         |    Version:  4.3.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Passing the following arguments to WP_Query results in a seemingly
 arbitrary ordering. Definitely not the menu order.

     [posts_per_page] => 16,
     [offset] => 0,
     [orderby] => menu_order,
     [order] => ASC,
     [post_status] => any,
     [post_type] => attachment,
     [post_mime_type] => application,video,text,audio,image,
     [suppress_filters] => 1,
     [post_parent] => null

 Settings posts_per_page to `-1` gets you the full list in the correct
 order.

 This has been broken since at least 4.3.x.

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Ticket URL: <https://core.trac.wordpress.org/ticket/34797>
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