Delonghi Eletta Explore - Cappuccino mix problem? Coffee does not flow smoothly.

Hello. I have question. All other programs are ok, but I have a problem with the cappuccino mix, the coffee does not flow smoothly at the end. Other programs - Flat white, caffe, cappuccino is ok, only in cappucino mix.

I attach 2 videos, cappuccino mix where is problem and the cappuccino where all is well.