[wp-trac] [WordPress Trac] #42586: Search function in Editor now broken with update to 4.9

[WordPress Trac]

#42586: Search function in Editor now broken with update to 4.9
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 Reporter:  wpress2010    |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  high          |   Milestone:  4.9.1
Component:  General       |     Version:  4.9
 Severity:  major         |  Resolution:
 Keywords:  needs-patch   |     Focuses:  administration
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Comment (by wpress2010):

 I am not sure  what you are referring to here. The "built-in editor"
 apparently is only called when you click on the link in the stylesheet
 file when in the Editor - a new message above the editing area that says,

 "Did you know?

 There’s no need to change your CSS here — you can edit and live preview
 CSS changes in the built-in CSS editor."

 Foolish message, as I AM editing the child theme's CSS file! This new
 "feature" is just some kind of "dumbing down" of the admin functions,
 IMHO.

 Is there a way to invoke this "built-in CSS editor" in the actual CSS
 file? I personally think that making styling changes via the theme's
 "Additional CSS" Customize tab is BAD practice. That's what a child theme
 is for!

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Ticket URL: <https://core.trac.wordpress.org/ticket/42586#comment:4>
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