The catalog page will be rendered on your browser, then click the tag "add to cart".
On the Dionea GUI, the debuggee will break at
StoreController#add_to_cart. Then try, as follows:
Continue debugging using steps etc., which causes a server thread by
redirection to break at "StoreController#display_cart".
Continue debugging further using steps etc., the cart page is displayed on the browser.
Disable disturb-action mode, click the "continue shopping" tag on
the cart page, which causes a server thread to execute
"StoreController#index" without any break.
Repeat steps 8 to 9 without enabling disturb-action mode, we see
the catalog and the cart pages alternate without any break.