I May be wrong, however there was/is a know Damus issue around event threading. At least one of those events has 3 e-tags, which may confuse clients.

If you can see the event below, it’s likely just a thread lookup logic issue.

nostr:note1z0de95jfdear3lce0l04nsdmzjfkcqrc58pd4vdy9qgry0pcwszqaqy569