Widget overrides widget_title filter

I’m using a simple widget_title filter to return an empty string if the widget title starts with !, but it’s not working with Advanced_Ads_Widget.

Method Advanced_Ads_Widget->widget applies the filters, then overrides them in line 41 of widget.php, preventing the use of an empty string as title:

$title = apply_filters( 'widget_title', empty( $instance['title'] ) ? '' : $instance['title'], $instance, $this->id_base );

extract( $args );
$item_id = empty($instance['item_id']) ? '' : $instance['item_id'];
$title = empty($instance['title']) ? '' : $instance['title']; // line 41

Thanks!

https://ww.wp.xz.cn/plugins/advanced-ads/