[wp-trac] [WordPress Trac] #34139: Widgets panel missing in Customizer when there is some error

[WordPress Trac]

#34139: Widgets panel missing in Customizer when there is some error
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 Reporter:  pavelevap                |       Owner:
     Type:  defect (bug)             |      Status:  new
 Priority:  normal                   |   Milestone:  Awaiting Review
Component:  General                  |     Version:  trunk
 Severity:  normal                   |  Resolution:
 Keywords:  reporter-feedback close  |     Focuses:
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Comment (by pavelevap):

 Yes, I know how to avoid this error, I was only surprised, that everything
 worked as expected (even with this error) in Customizer, so I could edit
 Menu and other settings. The only thing which did not work is Widgets.

 I am using Twenty Fifteen and latest trunk. I can see Fatal error in
 Customizer and website also.

 When Fatal error is before `wp_footer()` call, then "Widget" panel is not
 displayed. When Fatal error is after `wp_footer()`, then everything works
 well. Main problem is that users usually do not see errors (configured by
 webhosting company) and they can search for "Widgets" panel in Customizer
 and ask "Where is it?". I think that panel should be displayed even if
 there is Fatal error...

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Ticket URL: <https://core.trac.wordpress.org/ticket/34139#comment:5>
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