[wp-trac] [WordPress Trac] #53122: Add dns-prefetch resource hint as fallback for Google Fonts preconnect

[WordPress Trac]

#53122: Add dns-prefetch resource hint as fallback for Google Fonts preconnect
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 Reporter:  westonruter    |       Owner:  westonruter
     Type:  defect (bug)   |      Status:  assigned
 Priority:  normal         |   Milestone:  5.7.2
Component:  Bundled Theme  |     Version:  4.7
 Severity:  normal         |  Resolution:
 Keywords:  has-patch      |     Focuses:  performance
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Comment (by westonruter):

 Yeah, I'm not entirely clear on that either. But MDN recommends adding
 both, and `dns-prefetch` will at least benefit IE11 if Firefox doesn't in
 fact support any longer. [https://andydavies.me/blog/2019/04/17/three-
 ways-of-checking-your-rel-equals-preconnect-resource-hints-are-working/
 According] to Andy Davies:

 > It appears that preconnect doesn't currently work in Firefox even though
 it's supposed to

 See Firefox bug [https://bugzilla.mozilla.org/show_bug.cgi?id=1543990
 1543990] opened 2 years ago.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53122#comment:4>
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