[wp-trac] [WordPress Trac] #49677: "admin-preview-callback" in "custom-header" probably used to work (was: "admin_header_image" in "custom-header" probably used to work)

[WordPress Trac]

#49677: "admin-preview-callback" in "custom-header" probably used to work
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 Reporter:  RSalnikov    |       Owner:  (none)
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Customize    |     Version:  5.4
 Severity:  normal       |  Resolution:
 Keywords:               |     Focuses:  ui, accessibility, docs,
                         |  administration, template
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Ticket URL: <https://core.trac.wordpress.org/ticket/49677#comment:4>
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