[wp-trac] [WordPress Trac] #22080: add_theme_support should merge post-thumbnail post types by default (currently stomps)

[WordPress Trac]

#22080: add_theme_support should merge post-thumbnail post types by default
(currently stomps)
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 Reporter:  alexkingorg               |       Owner:
     Type:  enhancement               |      Status:  new
 Priority:  normal                    |   Milestone:  4.6
Component:  Post Thumbnails           |     Version:  2.9
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:
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Comment (by flixos90):

 Related: #36666

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Ticket URL: <https://core.trac.wordpress.org/ticket/22080#comment:32>
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