Hello lucerno,
I have the same issue. I found that it’s possible to delete the shortcode from each slide description field without removing it from the original post.
But the problem still remains when you add slides from “last post” (Add post slide -> tab: Last Post).
It’s certainly an issue and should be fixed filtering the post content before.
In addition it seems that there is an incompatibility with this plugin: Intuitive Custom Post Order
