The mobile preview doesn't scroll in firefox, but it does in chrome E.g.: http://www.bootply.com/bhIj8txbau  Tested in Firefox version 31.0 & 32.0, Chrome 37.0.2062.120
The mobile preview doesn't scroll in firefox, but it does in chrome
E.g.:
http://www.bootply.com/bhIj8txbau
Tested in Firefox version 31.0 & 32.0, Chrome 37.0.2062.120