[wp-trac] [WordPress Trac] #45068: Specific CSS attribute slows down customizer panels on Chrome and Opera

[WordPress Trac]

#45068: Specific CSS attribute slows down customizer panels on Chrome and Opera
-------------------------------+------------------------------
 Reporter:  Themezly           |       Owner:  (none)
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Customize          |     Version:  4.9.8
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
-------------------------------+------------------------------
Changes (by mukesh27):

 * keywords:   => reporter-feedback


Comment:

 @Themezly, Can you please share more details as i try to find this {{{
 [class*='contains'] [class*='sub_contains']{...} }}} class in {{{ wp-admin
 }}} and {{{ wp-includes }}} folder but can't fine it.

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Ticket URL: <https://core.trac.wordpress.org/ticket/45068#comment:1>
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