[wp-trac] [WordPress Trac] #64740: credentialless iframe incompatible with some browsers and cross-origin policies

[WordPress Trac]

#64740: credentialless iframe incompatible with some browsers and cross-origin
policies
--------------------------+---------------------
 Reporter:  amykamala     |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  7.0
Component:  Editor        |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
--------------------------+---------------------

Comment (by westonruter):

 This is a workaround that has worked:

 {{{#!php
 <?php
 add_filter( 'wp_client_side_media_processing_enabled', function( $enabled
 ) {
     if ( str_contains( $_SERVER['HTTP_USER_AGENT'] ?? '', 'Firefox' ) ) {
         $enabled = false;
     }
     return $enabled;
 } );
 }}}

 It seems the feature should be disabled in Firefox by default?

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Ticket URL: <https://core.trac.wordpress.org/ticket/64740#comment:6>
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