When I add items from the shop and I go to cart and want to remove the item with the (x) then nothing happens. And Sometimes few items removes but after page refresh these are showing again on the cart page

I tried to fix this by

1. Update woocoomerce plugin with latest available version (2.6.14)
2. Disable “ajax cart” from woocoomerce -> settings -> products -> display
3. Checked woocommerce template in theme folder is updated as using woocoomerce classes and variables
4. No cache plugin is used

Any help would be appreciated.