[wp-trac] [WordPress Trac] #21042: Plugins' implementation of "Number of Columns" screen option broken

[WordPress Trac]

#21042: Plugins' implementation of "Number of Columns" screen option broken
----------------------------+-----------------------------
 Reporter:  DJPaul          |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:  3.4
 Severity:  normal          |   Keywords:
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 Plugins that have implemented the "Number of columns" screen option by
 copy/pasting the implementation from the edit-form-advanced.php template
 are broken in 3.4.

 Examples of affected plugins are BuddyPress 1.6 beta 1, and AVH Extended
 Categories Widgets v3.6.4. To recreate, load up either of these plugins'
 admin screens and try changing the "Number of Columns" screen option.
 Nothing happens. No javascript errors reported in the browser.

 This was introduced by r20272, where the $screen_layout_columns stuff was
 moved from #poststuff to #post-body.

 While this is part of core that has been copy/pasted due to the
 functionality being unable to be implemented via a central helper method
 (or the like), could consideration be given to a backpat fix, perhaps via
 javascript?

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Ticket URL: <http://core.trac.wordpress.org/ticket/21042>
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