For the past week I have been unable to access my notifications or actions under my avatar while on mobile. I can see that I have pending notifications, but tapping on the number gets me nothing.

This has failure has progressed from being able to check notifications, but when the number resets to the lighting-bolt I could not open my avatar to compose a post.

Nokia Lumia 920; Windows Phone 8.1 plus Dev preview; IE -whatever version runs on mobile-