[wp-trac] [WordPress Trac] #30275: Exclude breaks wp_list_categories for non-hierarchical categories

[WordPress Trac]

#30275: Exclude breaks wp_list_categories for non-hierarchical categories
--------------------------+-----------------------------
 Reporter:  thomask       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Taxonomy      |    Version:  4.0
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I'm not sure if this is a bug or just some unhappy intent

 wp_list_categories( array (
   'taxonomy' => 'post_tag',
   'hide_empty' => false,
   'exclude' => '123'
 ) );
 return always "no category found" message. When "exclude" is not there, it
 works normaly, the same for any other option. Hierarchical taxonomies are
 ok, problem is only with non-hierarchical (even the custom ones).

 Problem can be solved by adding hierarchical=false parameter, but it is
 nowhere written, and not very obvious.

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Ticket URL: <https://core.trac.wordpress.org/ticket/30275>
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