Why can I not delete a credit card from my payment methods?

[goskins!37]

I've tried to delete one of my credit cards in my payment methods but ebay won't let me delete it or any of my payment methods.  It just gives me a small blank pop-up with an x to close the pop up.

[eburtonlab]

Try another browser to rule out a browser issue; that popup may render differently in another browser.

[disneyshopper]

Try adding a different credit card before deleting the one.

https://ppcapp.ebay.com/myppc/wallet/list