Sometimes a summary notification stays after the notification has been deleted by the server

[provokateurin]

I've seen this a few times (still quite rare), but this time I know how I triggered it:
I got a push notification for an app update and then opened the web frontend to install the update.
After that the push notification was gone, but the summary notification was still there.
I have no idea if this is a reliable way to trigger this problem.

[provokateurin]

Ok I also just had it with a Talk notification. Usually it doesn't happen so often that I realize notice it.