[wp-trac] [WordPress Trac] #64766: Media: Use Document-Isolation-Policy for cross-origin isolation on Chrome 137+.

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Mon Mar 2 12:45:39 UTC 2026


#64766: Media: Use Document-Isolation-Policy for cross-origin isolation on Chrome
137+.
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 Reporter:  adamsilverstein  |       Owner:  (none)
     Type:  defect (bug)     |      Status:  new
 Priority:  normal           |   Milestone:  7.0
Component:  Editor           |     Version:  trunk
 Severity:  normal           |  Resolution:
 Keywords:  has-patch        |     Focuses:
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Comment (by adamsilverstein):

 Replying to [comment:2 audrasjb]:
 > This looks like an enhancement and not a bugfix.
 > I'll defer on 7.0 tech leads @ellatrix @mukesh27 and @SergeyBiryukov for
 the decision on whether we include it or not in 7.0, but in my opinion,
 it's a bit late in the release cycle to implement new hooks or functions.

 We sometimes allow late changes like this to NEW features and...


 I'm mainly trying to address some bugs reported for the new client side
 media feature. Especially Rich Text Boxes / TinyMCE in meta boxes/ACF.

 The non-Gutenberg editor guard is a separate fix and I can break it out to
 a separate PR if desired.

 That said, I trust the lead's decision and we can ship this in a 7.0.1 if
 needed. I am separately working on implementing this same change in
 Gutenberg.

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Ticket URL: <https://core.trac.wordpress.org/ticket/64766#comment:7>
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