[wp-trac] [WordPress Trac] #56930: Block themes: improve omitting lazy-loading attribute on first content image/iframe

[WordPress Trac]

#56930: Block themes: improve omitting lazy-loading attribute on first content
image/iframe
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 Reporter:  adamsilverstein           |       Owner:  flixos90
     Type:  defect (bug)              |      Status:  assigned
 Priority:  normal                    |   Milestone:  Awaiting Review
Component:  Media                     |     Version:  5.9
 Severity:  normal                    |  Resolution:
 Keywords:  has-patch has-unit-tests  |     Focuses:  performance
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Comment (by flixos90):

 @adamsilverstein @manfcarlo @spacedmonkey I've looked into this bug
 further, also more specifically though
 https://github.com/WordPress/gutenberg/issues/41783 (which is caused by
 yet another problem, though it affects what is seen here too) and opened
 the above PR https://github.com/WordPress/wordpress-develop/pull/3560.

 While #55996 remains the root cause for part of the problem here (and
 should still be fixed, e.g. via https://github.com/WordPress/wordpress-
 develop/pull/3549), the new PR really fixes the problems here more
 specifically. Tests to cover all changes fix the respective problem are
 included. Please have a look.

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Ticket URL: <https://core.trac.wordpress.org/ticket/56930#comment:17>
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