well, ‘breaking’ basic browser functionality because it breaks the design of your page is not really something i would call rational...
As stated some comments below, the code literally says ‘disable back button’
We will find a way to fix this and have grid scroll without problems at the same time. This is not a dedicated website. This is exactly the same web console that is packages with our free product. It wasn't meant to run on the internet and confuse people. Sorry