Posts missing from profile page when using Piefed account on Voyager and Interstellar

I’m using the latest versions of Voyager and Interstellar from the App Store on iOS 26.2. If I go to my account and try to view my previous posts, only one is displayed, and oddly it’s not even the most recent one. It’s the same single post on both apps

If I use Piefed on the web (.social), I can see all posts I’ve made.

Is there a problem with the API used by the apps?