[wp-trac] [WordPress Trac] #56992: The Loop displays incorrect data for queries started with `fields => 'id=>parent'`.

[WordPress Trac]

#56992: The Loop displays incorrect data for queries started with `fields =>
'id=>parent'`.
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 Reporter:  peterwilsoncc                        |       Owner:
                                                 |  peterwilsoncc
     Type:  defect (bug)                         |      Status:  reopened
 Priority:  normal                               |   Milestone:  6.8
Component:  Query                                |     Version:  3.1
 Severity:  normal                               |  Resolution:
 Keywords:  2nd-opinion has-patch has-unit-      |     Focuses:
  tests                                          |
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Comment (by peterwilsoncc):

 I've created a [https://github.com/WordPress/wordpress-develop/pull/8460
 follow up pull request] to fix the issue with previews:

 * adds tests for previewing both draft and published posts with autosaves
 * modifies `WP_Query::the_post()` to use `WP_Query::$posts` in their
 original, filtered, filtered form if the full post objects were queried
 * continues to populate the post object in full for partial field queries,
 parent/child relationships of IDs.

 The failing tests can be seen in the [https://github.com/WordPress
 /wordpress-
 develop/pull/8460/commits/dfe209889c8be4e5a9b6cfc9b6f97bacf78b74e5 action
 runs against the first commit].

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Ticket URL: <https://core.trac.wordpress.org/ticket/56992#comment:26>
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