The sword of this small cutter is not a blade, but a simple metal bar. This therefore I think there is no plastic security, and this problem is actually an advantage: we can very precisely position the sheet to be cut if there are marks or lines on which to align.
Used to cut a hundred sheets (half laminated) into small domino clean and precise working with a little attention.
Do not cut more than 4 leaves, or only one if it is plasticized. In addition, the cut will not be clear, and there will be a shift.