[wp-trac] [WordPress Trac] #29825: text or tags within of video shortcode causes editor preview to autoplay

[WordPress Trac]

#29825: text or tags within of video shortcode causes editor preview to autoplay
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 Reporter:  jwenerd         |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Editor          |    Version:  trunk
 Severity:  normal          |   Keywords:
  Focuses:  administration  |
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 I've run into a regular occurrence where the videos previews in the visual
 post editor begin to autoplay.  Each time it only occurs with when the
 track tag is added within the [video] shortcode.

 This was done on latest truck in latest Chrome with no plugins.

 Steps reproduce: Add a video into the visual post editor,  then in the
 editor click the edit button appearing over the video preview,  click add
 subtitles and upload or select a srt file then press "Add Subtitles",
 then click Update, switch the editor from into visual mode, (at this point
 the text looks like this http://cl.ly/image/3Q3M0l1p1V2H ),  toggle back
 into visual editor and then the video begins to autoplay.

 I noticed the lack of spacing between the kind and label attribute; I
 added the space and it still caused the preview to autoplay. Then I tried
 adding any text between the video shortcode and it still caused the video
 to autoplay.  So it must be any text within the shortcode causing the text
 to autoplay when rendering the preview.

 I've also run into this issue when adding updating subtitles to a video.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29825>
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