On PC (I won't specify browser but I toggle between 2, you will know on your systems).
This isn't working at all. I used a significant adblocker that also blocks scripts so I tested with it turned off as well as a cookie-stopper, I am quite sure this is on your end. It literally doesn't appear at all and if you 'search' a username to message it just shows the person's profile pic in large but inside a scrolling box.
By the way this search lets you see all usernames of what you search... I found something interesting about someone's username... but idk if i should tell (hidden alts)