Responsive tables with column filters in header isn't working quite right

CRMaximusB

The responsive extension seems to malfunction a bit when I add filters to the top of column in the table header. In some cases the filter cells remain visible after the rest of the column disappears. In other cases the grid just doesn't expand to take up the entire area.

This fiddle shows the issue. If you resize the page larger and smaller you should be able to see the issue: https://jsfiddle.net/fzqo31o3/2/

This fiddle is the exact same, but with the filter row removed. It works just fine: https://jsfiddle.net/fzqo31o3/3/

Putting the filter in the table footer seems to work properly, but (at the moment) our design calls for the filters to be in the header.