[Q] Cyanogenmod 12 doesn't show any notifications topic

I am running Cyanogenmod 12 on my nexus 4, latest nightly build.
Since I have updated to CM12 I dont recieve notifications like from whatsapp or hangouts. My phone vibrates but I always have to lookup all apps to find out in which one the notification appeared ;)

Any ideas how to fix this? I havent found this issue elsewhere in the web.