[wp-trac] [WordPress Trac] #40020: Customizer fails to load in Safari due to X-Origin Header mismatch

[WordPress Trac]

#40020: Customizer fails to load in Safari due to X-Origin Header mismatch
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 Reporter:  nickkeenan                             |       Owner:  (none)
     Type:  defect (bug)                           |      Status:  new
 Priority:  normal                                 |   Milestone:  5.0
Component:  Customize                              |     Version:  4.7.2
 Severity:  normal                                 |  Resolution:
 Keywords:  has-patch dev-feedback has-unit-tests  |     Focuses:
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Comment (by danlockcuff):

 @fullyint I have been seeing this with Chrome for a while (running WP
 4.9.6). I applied your diff and Chrome was able to view the page again.
 When will this be added to prod?
 Thanks

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Ticket URL: <https://core.trac.wordpress.org/ticket/40020#comment:13>
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