[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:  (none)
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  6.1.2
Component:  Themes                   |     Version:  6.1
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:  css, performance
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Comment (by scruffian):

 Thanks for looking at this. There are a few things to consider:

 1. Does `has_block( 'button' )` work for buttons in templates as well as
 in post content?
 2. There is no need for a totally different file here. Originally this CSS
 was added to the blocks css that Gutenberg generates, but we had trouble
 with the unit tests, which is why we went this route (see
 https://github.com/WordPress/wordpress-develop/pull/3481).

 I'm sure there's a lot we can do to improve this. Thanks to everyone for
 their help.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56990#comment:14>
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