Question about Siemens EQ.300

Hello! A question about this Siemens EQ.300: "Does the machine recognise when there is not enough water for a whole cup of coffee? So, is the last cup always full? This was always the case with the machines we had before, but unfortunately it's not the case with the one we now (still) have. It just keeps going, even with too little water, and when there isn't enough, it logically stops and the cup is only half full, or even less. It's a pity about the ground coffee. Thanks for an answer!