I think all new cars do now. My old E87 from 2011 required foot on the clutch.
A mate had simialr issue on his ///M though where CC would not engage. I disconnected the clutch pedal and it made no difference to the car at all so assumed it was at fault. This was replaced but no joy.
There is also a two circuit brake pedal switch which could also be the issue, so even though the brake lights work, the other circuit could have failed.
I will be interested to hear what the final issue is.