[wp-trac] [WordPress Trac] #30781: Customizer doesn't load in IE8 with 4.1

[WordPress Trac]

#30781: Customizer doesn't load in IE8 with 4.1
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 Reporter:  lennybratcher  |       Owner:
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  4.1.1
Component:  Customize      |     Version:  4.1
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |     Focuses:  javascript
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Comment (by lennybratcher):

 I'm suspecting my second WP installation is faulty, as it didn't even have
 a class-wp-customize-control.php file in the wp-includes folder.

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Ticket URL: <https://core.trac.wordpress.org/ticket/30781#comment:25>
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