Using a shortcode inside a group?

I’m using a shortcode of another plugin at the end of some adverts. That works fine!
Now I want to put these adverts into a group and instead of using the other plugin’s shortcode in every single advert, I want to move the shortcode into the group.
I specified this in the field for Wrapper code “after advert”, which unfortunately doesn’t work: The shortcode is not executed but shows up as simple text.
Is there anything I can do? Or is this not supported?