imoyano on "[Plugin: Page Builder by SiteOrigin] is_active_widget not working after plugin update"

Hello,

I'm running WP 4.5.2 with some Widgets using PageBuilder. After I've updated the plugin to last version 2.4.9, my widgets stopped working.

The PHP error is:
Notice: Undefined index: mywidget_widget-4761001 in X:xampphtdocsWPpublicwp-includeswidgets.php on line 809

The following line is in the is_active_widget function:
if ( !$widget_id || $widget_id == $wp_registered_widgets[$widget]['id'] )

My widget has been using this function (is_active_widget), it was working before the plugin was updated.

https://wordpress.org/plugins/siteorigin-panels/

Here the solution....

I was using this code to register my widget:

add_action( 'widgets_init', function() {
register_widget( 'mywidget' );
});

I've changed to this:

add_action( 'init', function() {
register_widget( 'mywidget' );
});