[wp-trac] [WordPress Trac] #56990: Render blocking CSS `classic-themes.css` unnecessarily enqueued

[WordPress Trac]

#56990: Render blocking CSS `classic-themes.css` unnecessarily enqueued
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 Reporter:  adamsilverstein             |       Owner:  flixos90
     Type:  defect (bug)                |      Status:  assigned
 Priority:  normal                      |   Milestone:  6.3
Component:  Themes                      |     Version:  6.1
 Severity:  normal                      |  Resolution:
 Keywords:  needs-unit-tests has-patch  |     Focuses:  css, performance
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Comment (by spacedmonkey):

 The issue here is that the css makes a blocking request. In-line the css,
 fixes that problem. The css, is very small. I understand the desire to not
 want to render the css at all. But I would see this as a breaking change.
 You never know how someone is using this css.

 My fix is simple and uses exist functionity. It also side steps the
 backwards compatibility conversation.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56990#comment:50>
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