[wp-trac] [WordPress Trac] #55121: classic widgets with no settings won't show up in 5.9

[WordPress Trac]

#55121: classic widgets with no settings won't show up in 5.9
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 Reporter:  joncampbell     |       Owner:  (none)
     Type:  defect (bug)    |      Status:  new
 Priority:  normal          |   Milestone:  5.9.1
Component:  Widgets         |     Version:  5.9
 Severity:  normal          |  Resolution:
 Keywords:  has-patch php8  |     Focuses:
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Comment (by costdev):

 I believe this was considered doing it wrong in previous discussions.

 However, given that this has come up again, I think we should consider one
 of the following ways forward:

 - If it definitely is doing it wrong and BC doesn't need to be considered,
 consider adding `_doing_it_wrong` to highlight this to extenders.
  - This lets site owners and extenders know upon updating what the issue
 is and how to resolve it.
  - `_doing_it_wrong()` is used in several areas of Core even though the
 documentation already states the expected type(s).
 - If it isn't doing it wrong, consider the PR on this ticket.
  - ''Side note:'' The PR doesn't cover `null` values on
 `ArrayObject`/`ArrayIterator`, this may need to be added.

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Ticket URL: <https://core.trac.wordpress.org/ticket/55121#comment:5>
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