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?