[wp-trac] [WordPress Trac] #33622: Category counter is not working for attachment post type

[WordPress Trac]

#33622: Category counter is not working for attachment post type
--------------------------------+-----------------------------
 Reporter:  JohnOak             |      Owner:
     Type:  defect (bug)        |     Status:  new
 Priority:  normal              |  Milestone:  Awaiting Review
Component:  Taxonomy            |    Version:  trunk
 Severity:  normal              |   Keywords:
  Focuses:  ui, administration  |
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 When registering a custom taxonomy for "attachment" post type:

 {{{
 register_taxonomy( 'test', 'attachment', [
         "label" => "Test",
         "singular_label" => "Test",
 ]);
 }}}

 And setting taxonomy value for attachment file:

 [[Image(http://engineer.lv/wp-bug.png)]]

 The count for items in registered taxonomy shows 0 (if there is 1 or more
 items it will still show 0 an this is the problem):

 [[Image(http://engineer.lv/wp-bug-2.png)]]

 When clicking on count (that shows 0) opens Media Library with items that
 have this taxonomy value. And in here everything is just fine:

 [[Image(http://engineer.lv/wp-bug-3.png)]]

 The problem is that wrong counter that should be fixed.

 Bug was tested with clean WordPress install with no plugins and on clean
 Twenty Fifteen child theme.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33622>
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