[wp-trac] [WordPress Trac] #42499: Customizer Broke, says You are customizing Beta Wordpress

[WordPress Trac]

#42499: Customizer Broke, says You are customizing Beta Wordpress
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 Reporter:  xllentech     |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  4.9
 Severity:  normal        |   Keywords:
  Focuses:                |
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 I updated to Wordpress WordPress 4.9-RC2-42139 from 4.8.3

 When I updated, update process worked fine. but after the update, I went
 to Appearance-> Customize ..and it just says "You are customizing" in
 small letters and below it says "Beta Wordpress". and the rest of the
 whole screen is blank as in screenshot.

 BTW, I am using InstantWP for beta purpose, not sure if that makes any
 difference. I have had no other issues till date for over a year.

 Let me know if you need more information.

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Ticket URL: <https://core.trac.wordpress.org/ticket/42499>
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