Mac LOL Launcher crashes whenever using drop-down arrows in the Riot Point purchase menu

I went to purchase Riot Points from the in-game store. Upon using the drop-down arrow menu to select which credit card I'd like to pay with, the software would completely close. I am able to open the drop-down menu to see my options, but it's when I select one of the options that the software closes without fail (no delay - the browser disappears completely right as I make the selection). I'd like to note that this is only in the Riot Point store. I tested the drop-down menus in the champion and skin store and there were no issues.