Joomla Theme data-th removes <br />

Site uses a table for data. However, when the page dowscales to 566px wide, the cell contents are hidden and convert to the usage of data-th. The downside to this is that the original content in the cell had soft breaks and the usage of data-th removes them, jumbling the text. You can see it here.

Without reinventing the wheel, is there any way to force the
in the data-th? Or should I just recode the responsiveness of the table?