[wp-trac] [WordPress Trac] #59397: Footnotes not saved if the Custom Fields panel is open

[WordPress Trac]

#59397: Footnotes not saved if the Custom Fields panel is open
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 Reporter:  GregLone      |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Editor        |    Version:
 Severity:  normal        |   Keywords:
  Focuses:                |
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 How to reproduce:

 1. Create a post with title and some content.
 2. Add a footnotes block: add 1 or 2 footnotes to your content.
 3. Save your post.
 4. While still in your block editor, go to Options (top right of the
 screen), Preferences (very bottom of the menu), Panels, enable "Custom
 fields", click "Show & Reload Page".
 5. Now the "Custom fields" panel is displaying your post's metas.
 6. Note that the meta storing the footnotes' content is named `footnotes`,
 without the `_` prefix, so it is a public meta. Its value is a JSON
 string.
 7. Edit your post content by adding another footnote and save your post.
 8. Reload the page:
     - The anchor in the post content is still there.
     - The new footnote has disappeared from the footnotes block.
     - The post meta in the "Custom fields" panel doesn't contain the new
 footnote either.

 I haven't investigated but I guess this issue could be solved by making
 the post meta private, so it isn't displayed in the "Custom fields" panel.

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Ticket URL: <https://core.trac.wordpress.org/ticket/59397>
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