Gallery Not Showing

I am testing updating all of my plugins and WordPress and came across something that worked in the previous versions of this plugin and WordPress that is not working now. I am feeding a page (or post) into another page that is basically just a photo gallery. When I use the post-content short code for a page (post)that is just text it appears just fine. When I try to post-content with a page (post) that is only a gallery, the gallery does not show, can you tell me why this is happening?

https://www.ads-software.com/plugins/post-content-shortcodes/