It's super frustrating, but that's the distance the machine needs to "grab" first to pull the tape out, think of it as white margins when you print A4 pictures

The "me" is missing in the first sentence.

I have already asked this question. It's probably a problem with the design. I deal with it in two ways: (1) In the print dialogue, switch off the cut in the options, print endlessly and cut by hand. (2) I buy the much cheaper "generic adhesive rolls" from Amazon, ignore the 2cm scrap and need it as a label that I write on by hand with a waterproof pen.