[wp-trac] [WordPress Trac] #58089: Featured images within post content cause lazy-loading logic to apply incorrectly

[WordPress Trac]

#58089: Featured images within post content cause lazy-loading logic to apply
incorrectly
-------------------------------------------------+-------------------------
 Reporter:  flixos90                             |       Owner:  flixos90
     Type:  defect (bug)                         |      Status:  closed
 Priority:  high                                 |   Milestone:  6.3
Component:  Media                                |     Version:  5.9
 Severity:  normal                               |  Resolution:  fixed
 Keywords:  has-patch has-unit-tests needs-dev-  |     Focuses:
  note                                           |  performance
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Comment (by flixos90):

 @asafm7 Your problem sounds similar to the one that was fixed here in
 [55825], but I can't say for sure without having more context. Are you
 able to test it on your end?

 Basically, adding this to the beginning of the
 `wp_get_loading_attr_default()` function in `wp-includes/media.php` should
 fix it:

 {{{#!php
 if ( ( 'the_post_thumbnail' === $context || 'wp_get_attachment_image' ===
 $context ) && doing_filter( 'the_content' ) ) {
         return false;
 }
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/58089#comment:18>
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