Ahh, gotcha.

I believe that that tab is only for posts made specifically THROUGH Gleasonator. If I were to go login on Primal using the same key and make a post, I don't believe it would show up on that tab.

Ditto, the frontend software that Gleasonator uses, is based off of Alex's Fediverse frontend Soapbox, which had functionality to show all the posts made by users on the instance you were posting from. I'm pretty sure the gleasonator.dev tab at the top of the site is just that.