Experiencing a bug that skips checkout page on repeat visits?

I’m experiencing a bug where if I visit any Shopify store where I have checked out before, when I add something to my cart and click on “Checkout”, it completely skips the checkout page and jumps directly to the previous payment method that I used. I can not go back to change my details or choose a different payment method at all. Anyone else seeing this?

To test this - go to a shop, add something to cart and go through the checkout process (stopping at the final payment step). Then go back to the shop, clear the cart and start again.

The problem disappeared when I cleared the cache on my browser