[wp-trac] [WordPress Trac] #29216: Cannot read previousSibling of null when inserting wp-view.

[WordPress Trac]

#29216: Cannot read previousSibling of null when inserting wp-view.
----------------------------+-----------------------------
 Reporter:  programmin      |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Editor          |    Version:  trunk
 Severity:  normal          |   Keywords:
  Focuses:  ui, javascript  |
----------------------------+-----------------------------
 Steps to find the bug (WP 4.0 beta3):

 1) Start a post with this in text editor:

 {{{
 <div>hello</div>
 <div>goodbye</div>
 }}}

 2) With cursor at the start of the second line ("goodbye"), Go to add
 media, and insert a gallery or audio playlist.

 3) Notice that an exception is thrown:


 {{{
 Uncaught TypeError: Cannot read property 'previousSibling' of null wp-
 tinymce.php?c=1&ver=4102-20140721:8
 C.mceInsertContent wp-tinymce.php?c=1&ver=4102-20140721:8
 v wp-tinymce.php?c=1&ver=4102-20140721:7
 N.execCommand wp-tinymce.php?c=1&ver=4102-20140721:10
 send_to_editor load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-
 bar,schedule,wp-ajax-response,autosave,sug…:1031
 wp.media.editor.insert load-scripts.php?c=1&load%5B%5D=hoverIntent,common
 ,admin-bar,schedule,wp-ajax-response,autosave,sug…:604
 (anonymous function) load-scripts.php?c=1&load%5B%5D=hoverIntent,common
 ,admin-bar,schedule,wp-ajax-response,autosave,sug…:604
 k load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,schedule
 ,wp-ajax-response,autosave,sug…:384
 b.Events.trigger load-scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-
 bar,schedule,wp-ajax-response,autosave,sug…:384
 toolbar.set.d.view.Toolbar.items.insert.click load-
 scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,schedule,wp-ajax-
 response,autosave,sug…:602
 d.view.Button.d.View.extend.click load-
 scripts.php?c=1&load%5B%5D=hoverIntent,common,admin-bar,schedule,wp-ajax-
 response,autosave,sug…:602
 m.event.dispatch load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-
 migrate,utils,plupload,json2&ver=4.0-beta3:3
 r.handle load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-
 migrate,utils,plupload,json2&ver=4.0-beta3:3

 }}}

 Oddly enough the wp-view ''seems'' to work normally immediately after, but
 there was major breakage when using editor in Tinymce-inline mode after
 this exception.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29216>
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