Basically what the title says. My profile has only ever said that I've never made any posts, despite having made several in different servers (including this, my local one). They're not new posts either and I've made them across many days.
Even more than this, I actually seem to struggle to even find my posts by other means. I tried the search system, filtering to me in the "creator" field and all communities, searching for a key word that I know is in a post I made. And I know that post is visible because I got several replies in it and was able to reply to those comments. But I can't even find my own comments I made in that thread! The only results are from different threads.
Fortunately, I can find the post via my browser's history. Here's the post I was trying to find, which I cannot find through any means within Lemmy itself. https://lemm.ee/post/930728
It's not just this post, BTW. I can't find any of my posts via search or profile.
Do you have ‘hide read posts’ checked in your profile? That option hides your own posts, too, because naturally you’ve read them.
I didn't realise this until earlier today. I think this is the solution OP is looking for.