Purchasing RP glitch

I went to go purchase RP, when I went to the payment screen, the box for my CVV number appeared, then disappeared immediately after (as you can see in the screenie), but I clicked on pay now for the hell of it and the transaction still went through without me needing to enter my CVV number.

I don't know if this intended or not, but this has never happened to me and if it's not (as I don't think it is) then I wanted to put the word out there about it.