MSSN:CTRL is powered on the cloud and you access it from Chrome, sometimes the cache in Chrome gets a bit corrupted and causes unusual side effect. When this happens, it's sometimes necessary to clear the cache and refresh the page.
In Chrome, click on the 3 Dots on top right corner of the page:
Then select: More Tools > Clear Browsing Data
Copy and paste this Link: chrome://settings/clearBrowserData
Then you will get this option screen:
Main Opions to select: "The beginning of time" "Cached images and files" and "Hosted app data"
Now, refresh your browser and log back in and everything should be back to normal.