[wp-trac] [WordPress Trac] #33489: Widget without any settings

[WordPress Trac]

#33489: Widget without any settings
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 Reporter:  Technicaldev  |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Widgets       |    Version:  4.3
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Hello,

 Since Wordpress version 4.3 there has been a code change which has
 disabled my plugin for all users that have upgraded (with no error message
 etc).

 Upon investigation, it appears a code change has been made within the file
 'wp-includes/widgets.php' on line 317. "array_key_exists" has been
 replaced with "isset". This requires that the value is not NULL. As my
 widget has no settings (no title etc), the "$instances[ $this->number ]"
 value is NULL and this has therefore resulted in my widget no longer
 displaying.

 Could you please advise whether this is a bug or whether we are going to
 have to change the plugin to store an empty array etc.

 Thanks.

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Ticket URL: <https://core.trac.wordpress.org/ticket/33489>
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