Facebook: disappearing notifications?

[Ana]

I noticed lately Facebook has the option of hovering over your notifications to see who they're from. Except often after clicking, they disappear and there's nothing new. Why's that?

[Dave]

I dinnekin

[Prakriti]

I think it would be better if you contact facebook support team, they can suggest you a better solution.
https://www.facebook.com/help/community

[Daniel]

If its Not Showing Up Under Notifications its Possible What Ever it Was May Have Been Deleted Thus The Notifcation Would Also Be Deleted Next Time It Pops up Check There Profile To See If What The Pop Up Notifcation is in There It May Also Be a Error With Facebook Please Contact Facebook at the Help Center and Report the Problem to Them

[Angeleyes]

It could be just an error , probably best you contact Facebook support team and report it to them.

[Barbie]

I think that notification is from the same post