[wp-trac] [WordPress Trac] #64231: Customizer fails to save when switching themes due to an orphaned setting left over from a previously active plugin

[WordPress Trac]

#64231: Customizer fails to save when switching themes due to an orphaned setting
left over from a previously active plugin
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 Reporter:  alessandrolioce          |       Owner:  westonruter
     Type:  defect (bug)             |      Status:  reviewing
 Priority:  normal                   |   Milestone:  7.0
Component:  Customize                |     Version:  6.8.3
 Severity:  normal                   |  Resolution:
 Keywords:  has-patch has-test-info  |     Focuses:
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Comment (by palak678):

 Tested this on 6.8.3 and below are the results:-

 After deactivating the plugin and switching themes back via Customizer,
 the save request fails.
 The response returned 0, confirming the Customizer failed to handle the
 orphaned setting.

 please refer below screenshot:-
 https://prnt.sc/aVrVth_jGAuw

 Also find below screenshot of return 0 response at /wp-admin/admin-
 ajax.php?action=customize_save

 https://prnt.sc/fhMcPb8snM_x

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Ticket URL: <https://core.trac.wordpress.org/ticket/64231#comment:3>
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