giving gold via credit card just says "payment submitted"

I was using the Credit Card payment type to give gold, and I completed all the info and pressed the Submit button. It disabled the button and said "payment submitted". Usually that is an indication that it is working in the background, and I expected the page to change or that text to update.

However, nothing happened. I checked the console on Chrome to look for errors, but I saw none. Only when I opened a new tab to report this bug did I see the red envelope where I had 2 messages saying my payment had been processed and that the gold had been delivered successfully.

I am uncertain if I was just an unlucky case, or whether the Stripe processing functioned as designed, but I think it should offer some feedback on the page instead of just in the inbox.