I'm sure what client it is, but there is a client out there that is omitting the "root" E tag when making replies and it makes its hard to load reply threads 😞
Discussion
I've noticed that too. Very annoying. It's probably me.
I think Coracle is fine. at least I remember testing it and it seem to handle the root/reply tag the best
You need to do a graph building algorithm for such a case.