Still displays title HTML tag even if title is actually empty

[stanozr]

In line 213, variable $title is defined like so :

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

So $title is never actually empty (there's at least one space).

And then, in line 228, it checks $title and therefore always displays a heading tag :

if (!empty($title)) echo $before_title . $title . $after_title;

I believe you should leave $title as an empty string if none is provided.