[_post_url] not working for widget contact form

Hey i have noticed that there is a problem getting data like [_post_url] when i use the contact form as widget and not inside a page/post.

Works well inside pages but when it’s loaded as widget the [_post_url] dosn’t return a value when the email sent by mail.

I am able to see that the value is saved on Flamingo but it not getting sent via mail.

Is that a bug on your plugin?