[wp-trac] [WordPress Trac] #28936: Plugin submenu first item has strange behaviors

[WordPress Trac]

#28936: Plugin submenu first item has strange behaviors
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 Reporter:  MikeHansenMe      |       Owner:
     Type:  defect (bug)      |      Status:  new
 Priority:  normal            |   Milestone:  4.0
Component:  Administration    |     Version:  trunk
 Severity:  normal            |  Resolution:
 Keywords:  has-patch commit  |     Focuses:
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Comment (by SergeyBiryukov):

 A better fix would probably be to avoid copying classes in
 `add_submenu_page()`. See [attachment:28936.3.diff].

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Ticket URL: <https://core.trac.wordpress.org/ticket/28936#comment:5>
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