[wp-trac] [WordPress Trac] #53427: Widget preview not working if widget registered via a instance

[WordPress Trac]

#53427: Widget preview not working if widget registered via a instance
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 Reporter:  spacedmonkey  |       Owner:  noisysocks
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  5.8
Component:  REST API      |     Version:  trunk
 Severity:  major         |  Resolution:
 Keywords:  has-patch     |     Focuses:  rest-api
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Comment (by zieladam):

 I wanted to test this but I don't have any function-based widgets
 installed. Would you share the one you use for testing?

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Ticket URL: <https://core.trac.wordpress.org/ticket/53427#comment:11>
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