[wp-trac] [WordPress Trac] #46833: Facebook embed blocks not previewable and cause console errors in customizer

[WordPress Trac]

#46833: Facebook embed blocks not previewable and cause console errors in
customizer
--------------------------+-----------------------------
 Reporter:  timph         |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  5.1
 Severity:  normal        |   Keywords:  needs-patch
  Focuses:                |
--------------------------+-----------------------------
 steps to replicate:
 1. Create new post
 2. Add a new Facebook Embed block (I used same URL from Theme Unit Test
 Data as this is where it was noticed:
 https://www.facebook.com/6427302910/posts/10156380423617911/ ).
 3. Save and publish post.
 4. Visit post on frontend of site - no console errors appear.
 5. Click Customize in adminbar.

 The result is that console errors reported, and the embed does not display
 giving inaccurate previews in the customizer:

 {{{
 5uPlmwCxNZ9.js:70 ErrorUtils caught an error: "Failed to set the 'domain'
 property on 'Document': Assignment is forbidden fo...". Subsequent errors
 won't be logged; see https://fburl.com/debugjs.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/46833>
WordPress Trac <https://core.trac.wordpress.org/>
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