Main page not displaying when clicking the bottom tab again

1.) I used “tabbed” template for my app.

2.) When you click the “products” list tab below, the products.html main page appears (which is all good)

3.) when you click a certain product, it goes to “product.html” subpage where it displays the details of the chosen product.

  1. when you click other tab, let’s say, about page, it goes to about.html…

Here is there problem:
5) When you click the “products” tab again, it appears the “product” i chose previously. not the main product page.

Here is what i would like:
When a user click the products tab, the product main page should appear and not the product i previously clicked

How to do that? thank you.