Customize magento template is not working sometimes

[bruno_soares]

Hi All,

I'm following this tutorial https://devdocs.magento.com/guides/v2.2/frontend-dev-guide/templates/template-sample.html

I did some tests and it is working, but sometimes the changes take a while to show.

Following the same idea of the tutorial I need to customize the cart items layout, so I copied this file to my folder structure https://github.com/magento/magento2/blob/2.2/app/code/Magento/Checkout/view/frontend/web/template/mi...

But the problem is that nothing happens when I change the layout, so I have two questions, 1- why sometimes the changes took a while to show, 2- why the second file changes don't take effect?

Thanks!

[bruno_soares]

Now I can see the the changes on second file that I mentioned, but I can't figure out why it takes so much time to be displayed.