Just a small bug I’ve noticed – on the ‘Order Confirmation’ page, when the confirm order button is clicked, the loading gif animation appears, but the mask covering the page doesn’t. Which obviously isn’t great for user experience, since people could end up clicking the confirm order button multiple times without realising that it’s already being processed. Especially if there’s a delay in loading, for example, on a slow network.

In a similar vein; from the cart page, when the express checkout button is clicked, the mini browser window opens with the PayPal login. After logging in and continuing, the PayPal window closes and the user sees the cart page again. Sometimes there’s a delay of a second or two (could be longer, especially on a slow network) before the page redirects to the ‘Confirm Order’ page. This could cause some confusion/frustration if there’s a delay, because it would look to the user like nothing has happened after they’ve logged into PayPal.
So, if possible, it would be good to have the loading animation cover the cart page after the user has logged into PayPal, to give some feedback that they are being redirected to the ‘Order Confirmation’ page?