[wp-trac] [WordPress Trac] #64418: Valid CSS is causing failure in the Additional CSS panel

[WordPress Trac]

#64418: Valid CSS is causing failure in the Additional CSS panel
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 Reporter:  drw158                               |       Owner:  jonsurrell
     Type:  defect (bug)                         |      Status:  assigned
 Priority:  normal                               |   Milestone:  7.0
Component:  Customize                            |     Version:  4.7
 Severity:  normal                               |  Resolution:
 Keywords:  has-patch has-unit-tests dev-        |     Focuses:  css
  feedback                                       |
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Comment (by jonsurrell):

 Ping @dlh as the [https://make.wordpress.org/core/components/customize/
 Customize component maintainer] for help reviewing the changes,
 [https://github.com/WordPress/wordpress-develop/pull/10667 especially for
 the customizer].

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Ticket URL: <https://core.trac.wordpress.org/ticket/64418#comment:23>
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