Notifications now favour the longer notification, (assuming you're running a relatively up to date master) you do receive a notification for each open tab though unfortunately.
I haven't logged in for a while, but when I did I found a notification waiting. But when I click on the notification area, it kind of flashes and says there are no notifications:
notifications.PNG
It kind of seems like it's finding a notification for me and then possibly realizing it's old and removing it when I try to view it.