Probably something you might want to check if you have the following tagline:
"A modern user interface that is beautiful on every screen
and performs perfectly on every platform is not an option,
it’s a necessity."
Maybe they only tested it in the Qt WebBrowser (I'm only half-joking - it seems to work on "narrow windows", which would be in line with the type of devices on which this browser is supposed to work).
Their webpages are constantly moving, changing and breaking. The domain itself has moved 4 times in 4 years. There's just incredible churn on that side of the project, unfortunately.