[wp-trac] [WordPress Trac] #19783: Add a "Processing..." overlay to update iframes

[WordPress Trac]

#19783: Add a "Processing..." overlay to update iframes
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 Reporter:  dd32             |       Owner:
     Type:  enhancement      |      Status:  new
 Priority:  normal           |   Milestone:  Awaiting Review
Component:  Upgrade/Install  |     Version:
 Severity:  normal           |  Resolution:
 Keywords:  ux-feedback      |     Focuses:
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Comment (by chriscct7):

 Related: #29820

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Ticket URL: <https://core.trac.wordpress.org/ticket/19783#comment:2>
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