I found another problem with the two-factor auth stuff:

The QR code is squished on the left - compare the square in the top left with the one in the top right; it's taller than it is wide, which isn't a desirable property of squares.
As a result I can't scan the code.
If I change the zoom factor (in Chromium) then it fixes itself, but at certain zoom factors I'm not able to scan it.
This is for a dummy account which I never use by the way and so the QR code is worthless.