If your situation is like mine, you have to wait for some
fifteen seconds or so. And then greeted with a login input.
Also, my CPUs were at around 50 % the whole time.
I'm sorry, but if that's the “future of web UIs”, I'd rather
stay with the “troglodytes”, who write simple HTML forms
with a bit of vanilla scripting here and there.
I can't experience this problem, for my browser only displays for this site a beautiful, immaculate, plain white page :)