I think you need to like clear all your cookies and cache or something for it?
I'm not sure, since I was using Steam browser which is within the game (community whatever), it was few days like that but then it went away, also there was this little button down on the bottom which said "Do you want to return to old layout" the one we currently have.
I wouldn't call it a troll, but yesterday when I browsed around on YouTube while playing CS:GO (I used web browser within the game) the YouTube page was entirely different than it was now, subscriber box was kinda 3D or something and what not...
I had a entirely different look for around a day on Youtube as well, was some weeks ago though. Only stayed for a day as well. YouTube testing something new for each and every country/place/PC/idk?