I have a follow-up on that topic. I also accidently clicked "mark all as read" , since then it seems to me that the notification-feature doesnt work right.
Now, when I open the client no notifications are visible and the option "show unread only" is active. But there are unread notifications!
When I deactivate this option, the notifications are displayed including the unread ones.
Code
I added your request "Sure you want to Mark All As Read" to the list so it will appear in one of the next updates. Unfortunately you will not be able to get the marked notification back.
When could we expect the user-dialog or solution within a near update?