[wp-trac] [WordPress Trac] #49857: Groups disappear after inserting something inside it in Gutemberg

[WordPress Trac]

#49857: Groups disappear after inserting something inside it in Gutemberg
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 Reporter:  ple33         |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.4
 Severity:  major         |   Keywords:  needs-patch
  Focuses:  ui            |
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 **Description:**

 Since upgrading to 5.4, when I create a group using the Gutemberg editor,
 and then add something inside, the **group disappears from the UI**, but
 it remains in the source code.

 As we use this feature everyday as part of our company workflow, this bug
 is seriously affecting our daily operations as it causes layout havoc when
 we try to display an article's contents.

 This bug is related to ticket #49748.

 **Actions taken so far:**

 - Flushed browser cache
 - Ensured that assets are not cached
 - Reinstalled WP 5.4
 - Disabled all plugins


 **Steps to reproduce:**

 1. Create a new post (this issue also occurs on existing articles, but
 this bug is more easily highlighted in a blank article).

 2. Create a new group.

 3. Click on the (+) to add, say, a paragraph within it.

 4. The group completely disappears from the editor, only the paragraph can
 be interacted with. The group no longer appears on the outside of the
 inserted paragraph, as it used to be in WP 5.3. The group itself still
 exists in the code editor.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49857>
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