I deactivated ALL other plugins and this still did not work.
So I searched for another sortable table plugin and found TablePress, which does much more and actually works. I also like that TablePress lets you set up your table in the admin area and then you call it with a short code. When you need to add to the table, go back to admin and add more rows. No more convoluted and nitpicky formatting of each row in the table.
It also lets you display 10, 25, 50 or 100 rows at once with a drop box to select how many rows to display AND provides a search feature to filter down to specific requests.
It certainly doesn’t help that the author of this plugin did not even bother to reply with some suggestions.
Try TablePress; I think you will find it to be a great improvement over this plugin.