GD shortcodes visible to non logged in users

I deactivated GD and then reactivated the plugin while investigating an issue with my website. After this, I noticed that the GD shortcodes became visible to non logged in users.

For example, the add listing page shows the code

gd_notifications]
[gd_add_listing post_type=” show_login=’true’ login_msg=” container=” mapzoom=’0′ label_type=” bg=” mt=” mr=” mb=’3′ ml=” pt=” pr=” pb=” pl=” border=” rounded=” rounded_size=” shadow=” ]

Instead of the corresponding listing form. But while I was logged in, the listing form and all other GD features were visible.

Does anyone know how I can solve this?