[wp-trac] [WordPress Trac] #28337: Widget Customizer: Breaks if widget echo iframe code

[WordPress Trac]

#28337: Widget Customizer: Breaks if widget echo iframe code
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 Reporter:  denzel_chia   |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  3.9.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Hi,

 Was working on a widget that echo html iframe video embed code and found
 that it breaks widget customizer. The sidebars does not appear in theme
 customizer if the widget was already deployed on sidebar. And it does not
 update the theme customizer preview if it was deployed within theme
 customizer. Not a conflict with any theme, I tried it out on 3 WordPress
 default themes.

 Widget customizer works properly after I deleted the iframe html tag from
 my plugin code.
 Probably the iframe html tag is causing javascript error?

 Sorry if my explanation is not clear.

 Thanks!
 Denzel

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Ticket URL: <https://core.trac.wordpress.org/ticket/28337>
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