[wp-trac] [WordPress Trac] #31140: WordPress 4.0 upgrade caused 404 on single custom post types

[WordPress Trac]

#31140: WordPress 4.0 upgrade caused 404 on single custom post types
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 Reporter:  MarjWyatt          |       Owner:
     Type:  defect (bug)       |      Status:  closed
 Priority:  normal             |   Milestone:
Component:  Posts, Post Types  |     Version:  4.0
 Severity:  normal             |  Resolution:  worksforme
 Keywords:                     |     Focuses:
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Comment (by dd32):

 There is the potential something changed between 3.9 and 4.0, but my
 inability to duplicate the issue you're seeing on 4.1 doesn't allow me to
 find out if that's the case.

 The code would've been broken on 3.9 - `is_singular('wsg-intros`)`
 would've always returned false. Although there's the possibility it was
 working because you had a 2nd posts loop later in the page load (or in the
 sidebar) where it was referencing the main query still.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31140#comment:5>
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