[wp-trac] [WordPress Trac] #53529: Block based widget admin screen causes a NS_ERROR_FAILURE error in Firefox

[WordPress Trac]

#53529: Block based widget admin screen causes a NS_ERROR_FAILURE error in Firefox
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 Reporter:  walterebert    |       Owner:  (none)
     Type:  defect (bug)   |      Status:  new
 Priority:  normal         |   Milestone:  5.8
Component:  Widgets        |     Version:  trunk
 Severity:  normal         |  Resolution:
 Keywords:  needs-testing  |     Focuses:
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Comment (by walterebert):

 This is on a new install with the Beta plugin using the Twenty Twenty-One
 theme. No other plugins are active.

 The widgets are in the footer sidebar: search, recent posts, recent
 comments, archives, categories.

 I tested the site with the theme unit test data installed.

 My local setup is Linux with Apache and PHP 8.0.7 (using FPM).

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Ticket URL: <https://core.trac.wordpress.org/ticket/53529#comment:3>
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