[wp-trac] [WordPress Trac] #57630: Site Editor: Template part customization is not saved for certain child themes

[WordPress Trac]

#57630: Site Editor: Template part customization is not saved for certain child
themes
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 Reporter:  mreishus          |       Owner:  (none)
     Type:  defect (bug)      |      Status:  new
 Priority:  normal            |   Milestone:  6.2
Component:  Themes            |     Version:  trunk
 Severity:  normal            |  Resolution:
 Keywords:  has-testing-info  |     Focuses:
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Comment (by hellofromTonya):

 == Test Report

 - Revert [54860]
 - Repeat the steps

 After reverting [54860], works as expected ✅

 * I was able to save changes to the parent theme's Header template part.
 * Also retried editing and saving the child theme's Header (Dark, small)
 template part. Worked as expected.

 See it in action [attachment:"Test-after-revert-r54860.gif"]

 === Notes

 But I don't yet understand why or how [54860] is affecting the issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/57630#comment:5>
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