[wp-trac] [WordPress Trac] #47900: Error on update MCE Views in gutenberg block "Classic Editor"

[WordPress Trac]

#47900: Error on update MCE Views in gutenberg block "Classic Editor"
--------------------------+-----------------------------
 Reporter:  vjik          |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Editor        |     Version:  5.2.2
 Severity:  major         |  Resolution:
 Keywords:  needs-patch   |     Focuses:  administration
--------------------------+-----------------------------
Changes (by noisysocks):

 * keywords:  reporter-feedback => needs-patch
 * milestone:  Awaiting Review => Future Release


Comment:

 Thanks @vjik. I can confirm the error message. Looks like it happens in
 Firefox too.

 {{{
 this.collection.mirroring is undefined
 }}}

 I am not sure if it is a block editor bug or a Core bug.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47900#comment:5>
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