Why are my facebook notifications don't open the app when i tab them?

[AC Question]

I have huawei ascend mate 7 gold edition, the one with 3gb Ram
the problem is that since I updated to lollipop, when i receive facebook notifications and I try to open it from the notifications bar, it doesn't open
the notification just disappear after i tab on it and the application doesn't open
any help would be really appreciated, and thanks in advance.

 

[the tall guy]

Hi, it sounds like there is a problem with the app. can you extend the notification then click on it? does that work?