Table Sorting not working for fixed header scrolling table

[typeofgraphic]

Hi, I am working with two tables which are filled with an each loop inside two different views. Downloaded the .js file for table sorting this morning which works fine with the first table, but the second table fails to sort. The only difference between these is that the second table has some heavier CSS applied to create a fixed header (enabling a very large list to be scrolled through and fit within the arrangement of views on screen).

The classes appear and toggle as they should when the headings are clicked, but the table does not sort. Could it be that by forcing the header and body into display:block or something else is disabling the ability to resort the table?