It can be frustrating, that's for sure. Fairly certain this is a scripting error / bug, as it's affecting both mobile phones and computers. It has to do with being 'linked' to a page on Bungie.net. When you click something, the site normally just loads anything clicked on below the profile bar, but for some reason or another, it's trying to fully buffer / load the entire page from scratch including the profile bar, which screws with it, because it isn't coded to check your login status every time you click something. Probably has to due with the way the website cache script is being processed. I usually work around this by simply revisiting the home page until all your profile icons/notifications reappear in the top right corner as normal, then you can manually go back to your destination. You'll usually know when it's about to mess up if you click something and the usual loading indicator doesn't appear in the middle of the screen and it tries to reload the entire link you're clicking on. I'm sure Bungie is aware of this issue at this point and working on a fix, as it most likely affects their logins as well! All we can do is be patient, unfortunately!