I don't know much about this right now, but I still want to ask: have you seen something similar?
We have a couple of users saying that they don’t see all the latest comments. For example, when a user has replied to a topic and then checks the recent feed (https://community.company.com/activity/recent), the topic doesn’t appear there.
Could this be due to some kind of delay with the database? Or might it have something to do with the browser?