Missing arguments for widget_title filter

Hi,

I am using the widget_title filter to modify the titles of category widgets. I need all three parameters of the core’s apply_filters() call (https://core.trac.ww.wp.xz.cn/browser/tags/5.1.1/src/wp-includes/widgets/class-wp-widget-pages.php#L54) and get an error with the Popular posts plugin, because it uses apply_filters( 'widget_title', but only with the title as a param.

Could you add $instance and $this->id_base as additional parameters? And maybe remove the apply_filters( 'widget_title' from the shortcode or use a custom filter?

Thanks,
Florian