Responsive datatables in collapsing containers

I have found some kind of issue when a data table is created inside a collapsed container, in that is does not inherit any responsive properties.

i have included an jsFiddle and DataTables live example.

http://jsfiddle.net/5xB6H/2/

http://live.datatables.net/saqijiw/1/watch

Table one works fine, how ever table two will stretch outside of its container on a small display.

Does anyone know a way around this?