[wp-trac] [WordPress Trac] #53489: Widgets: Registered sidebar not showing in the widget editor

[WordPress Trac]

#53489: Widgets: Registered sidebar not showing in the widget editor
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 Reporter:  walbo          |       Owner:  (none)
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  5.8
Component:  Widgets        |     Version:
 Severity:  normal         |  Resolution:
 Keywords:  needs-testing  |     Focuses:
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Comment (by hellofromTonya):

 == Testing

 Env:
 - OS: macOS Big Sur
 - Browser: Firefox and Chrome
 - WordPress: 5.8 Beta 3
 - Plugins: none
 - Theme: Twenty Twenty-One

 === Results:

 - When the `'id'` is `'my-sidebar'`, I can reproduce the problem ❌. See
 attachment [attachment:"53489-id-my-sidebar.png"].

 - When changing the `'id'` to `'sidebar1`', doesn't work ❌

 - When changing the `'id'` to `'sidebar-m`', doesn't work ❌

 - When changing the `'id'` to `'sidebar-2`', it works ✅. See attachment
 [attachment:"53489-id-sidebar-2.png"].

 === Findings:

 Hmm, seems some code is doing a pattern match for the sidebar ID.
 Investigating 🕵️‍♀️.

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Ticket URL: <https://core.trac.wordpress.org/ticket/53489#comment:4>
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