[wp-trac] [WordPress Trac] #58183: PHP notice when accessing Customizer with a classic theme without widgets

[WordPress Trac]

#58183: PHP notice when accessing Customizer with a classic theme without widgets
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 Reporter:  kraftner      |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Customize     |     Version:
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by kraftner):

 Thanks for the further investigation. Today I took some time to look into
 this and actually ended up with a related other change, namely [52622].
 Removing this line again makes the issue go away.

 This is of course no solution because then #54888 which [52622] was
 supposed to fix reappears.

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Ticket URL: <https://core.trac.wordpress.org/ticket/58183#comment:4>
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