When navigating to Prepate > Extrude on the attached display, the printer homes the hotend, heats up the nozzle and instructs you to cut the filament in an 45° angle before feeding it into the Sprite Extruder. As soon as the temperature has reached its destination value you can confirm and the extruder starts extruding the filament.
However… it is not possible to stop the printer from doing that again.
It will continue extruding material until you power off the whole machine. I believe this is a firmware bug…