[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
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 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:
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Comment (by adamsilverstein):

 > though I will say that there's significant lag in the editor area being
 useable upon loading the screen that was never there with 6.9.1 or any
 earlier version. Approximately 7 seconds after the initial page is loaded
 but before I can get focus into the editor.


 This shouldn't be related to the new client-side media handling, that code
 only gets loaded when you first try to upload an image. Do you see any
 notices in the console?

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Ticket URL: <https://core.trac.wordpress.org/ticket/64740#comment:29>
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