Tab navigation freezes other tabs if going forward but not backwards

Tab navigation freezes other tabs if going forward but not backwards

We have a large web page with 15 tabs. 4 tabs were recently added.

Some of the tabs have a page of data appear when selected. 

The new tabs have forms that when filled in use an AJAX call to get data to display in a  in a Jquery table.

We noticed if a select a tab and then go to the next tab (on the right), It is is broken(unresponsive).

The strange thing is if I start with the tab on the right and go to that tab (that broke above) it is OK.