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

WordPress Trac noreply at wordpress.org
Fri Feb 27 10:40:06 UTC 2026


#64740: credentialless iframe incompatible with some browsers and cross-origin
policies
-------------------------------------+------------------------------
 Reporter:  amykamala                |       Owner:  adamsilverstein
     Type:  defect (bug)             |      Status:  reviewing
 Priority:  normal                   |   Milestone:  7.0
Component:  Editor                   |     Version:
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch needs-testing  |     Focuses:
-------------------------------------+------------------------------

Comment (by adamsilverstein):

 Thanks for testing @soyebsalar01. This PR removes some headers Firefox no
 longer needs since we disabled the feature there.

 I also verified this fixed the issue with ACF WISYWIG editor as well as
 Elementor.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64740#comment:19>
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