[wp-trac] [WordPress Trac] #37817: Emoji code not loaded responsibly

[WordPress Trac]

#37817: Emoji code not loaded responsibly
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 Reporter:  superpoincare  |       Owner:
     Type:  enhancement    |      Status:  new
 Priority:  normal         |   Milestone:  Awaiting Review
Component:  Emoji          |     Version:  4.6
 Severity:  normal         |  Resolution:
 Keywords:                 |     Focuses:  performance
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Comment (by superpoincare):

 Replying to [comment:4 peterwilsoncc]:

 I find it difficult to separate noise from trend in webpagetest.

 I am hence linking to two screenshots of Chrome developer tools. The
 version used is Chrome 53 dev on OS X Sierra beta on Browserstack.

 http://imgur.com/a/LzACf

 (Note: style.min.css is loaded using link rel="preload" and not render-
 blocking)

 I think what is happening is that even though the file wp-emoji-
 release.min.js is being asked to be inserted after DOM content is loaded
 is that it is being discovered by the browser and hence rendering blocked.

 Also, Pagespeed insights, which is a good tool otherwise, probably has
 some bug and doesn't detect it. Perhaps it just sees that the js file has
 been added after DOM content is loaded, so doesn't complain.

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Ticket URL: <https://core.trac.wordpress.org/ticket/37817#comment:5>
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