[wp-trac] [WordPress Trac] #39128: Customize: Preview fails to load when domain mapping in use (home/siteurl domain mismatch)

[WordPress Trac]

#39128: Customize: Preview fails to load when domain mapping in use (home/siteurl
domain mismatch)
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 Reporter:  RomainVB      |       Owner:
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  4.7.3
Component:  Customize     |     Version:  4.7
 Severity:  normal        |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Comment (by flomei):

 Is there any way to fix this until a patch will be applied to the Core?
 This is currently breaking some client sites, so even a temporary patch
 would be welcome.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39128#comment:42>
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