Ive been playing this bj machine for a couple years now. Its single deck continuos shuffle. The other day, I doubled down on 11 and it gave me no card. It light up "double down" indicating that i indeed selected double down. No card was given to my 11. The dealer then proceeded to draw to 18 and i lost.

The manager came over and was puzzled. He ended up giving me my 2 units back. (Did i miss out on ev? Havent looked up what ev of dd11 vs 18 is)

This seems very strange and the manager couldnt explain how i didnt receive a card.