[wp-trac] [WordPress Trac] #34738: Customizer preview elements lose or misplace their preview data

[WordPress Trac]

#34738: Customizer preview elements lose or misplace their preview data
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 Reporter:  Clorith       |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 As first reported by @pagelab in https://wordpress.org/support/topic
 /inconsistent-behavior-of-javascript-clickchange-events-in-the-customizer

 When making changes to widget settings in the customizer, they will forget
 (and "reset") the other changes made except the most recent one when
 generating the preview.

 Reproducible with weird outcomes:
 Add a Text widget
 Write a title, preview updates with the title as expected
 Write some content, preview updates with the content but removes the
 title.

 You can also remove the title, but the preview keeps the title, and mix
 and match as you please it seems, some times it will include the data
 though (tested with twenty fifteen, no active widgets and the text widget
 from core)

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Ticket URL: <https://core.trac.wordpress.org/ticket/34738>
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