Just looking at this post as an example, on lemmy.world show it has 29 comments, but when i open it, there are now only 3 or 4. I replied to one comment, the user i replied to got banned, and the whole comment tree is gone from lemmy.world. Other instances still show all comments, including those from the banned user and my reply. I think it’s very confusing when a single post appears with different comments on different instances, and have no idea how this works.
Edit: why am i forced to upload a photo for a new post?
There's an option when banning a user to also remove their content, albeit unless it's an admin action I don't think it would affect their whole post history beyond the specific community.
I'm kind of getting the sense as I look into this that it may be related to how Voyager is rendering the thread, as I'm not able to observe what's being described from the web interface. That's another catch in all this, the other apps and interfaces have their own quirks in how they handle rendering things, which itself is typically related to how they work off the base software (Lemmy in this case).
It is not a voyager issue. Viewing the Post on world in the web browser also only shows 3 out of 20 comments