Purchasing Flow Skips Ahead After Double Click

Just something I figured I'd bring up for general information, might help a couple of people.

The Marketplace purchase flow has a few steps you have to go through, such as confirming shipping method and payment details. Double clicking on a step's Next button accidentally caused my flow to jump forward two steps and resulted in the purchase without the chance to alter details on the payment screen. Thankfully there was nothing I needed to alter, but for some, such a mistake could cause issues with either the wrong payment method being used or a purchase being confirmed by someone unsure if they wanted to finalize after that screen.

Strange that one page's Next button also applies to the page after it.