I have some reports from users that they are failing to get notifications (mostly live alerts) since we upgraded to 10.2. I'm not sure where to start on this, because as far as I can see notifications are working. I'm aware of user settings, and that browser settings might interfere, but these are existing users who were getting notifications before the upgrade.
We did previously have one or two reports of odd behaviours, such as notifications that could not be dismissed - so a user always had one or two notifications, irrespective of any action to view the relevant thread, dismiss the notification, etc. However, the reports for 10.2 are new.
Historically, we've had similar reports regarding emails. Some users report notifications not arriving for weeks, and then starting again, and then stopping. I've always put those down to hyper-active anti-spam systems blocking emails, rather than anything within Telligent, but it's hard to be certain.