Hi there, wrong community for this sort of stuff but I think youre mixing votes and comments up in those screenshot?

I just assume its threads from people I've blocked.

Try loading the same post on the website for your instance. If the comments appear there, then it's a problem with the app. If the comments are gone on the website, then it's an instance problem.

My first guess at something to check would be blocked instances. If you or your home instance have blocked other instances, then (from what I understand), you won't see any comments or posts from people of those instances, even on a post you can see.

I've been having similar problems in Voyager for ages. But, in my case, I can see everything in the webpage.