So recently I have been facing this issue that several posts show a higher number of comments than the actual number of comments that i can see. For example in the photo, the number of comments is shown as 14 but the post only shows me 5 comments. Is this some sort of federation issue or is this a bug¿?
Both. There is a bug in lemmy_server where federated edits seem to increment the new comment count, It's been mentioned on GitHub issues. See if you can spot if those 5 comments had edits.
3 of the comments did have edits so that might explain it. Thanks for the explanation