"Clean things up before and after the shortcode"

Using camptix together with other shortcode for tabs.

In camptix.php there are code for “Clean things up before and after the shortcode”. Like:

// Clean things up before and after the shortcode.
$post->post_content = $this->shortcode_str;

This seems to delete the tab shortcode I’m using. Works ok commenting it out, so wanted know what problems may accur?

Thanks

https://wordpress.org/plugins/camptix/