So apparently there were hard materials in the nibs of my stylus, because it just left a pair of gashes on the surface of my graphics tablet. I've changed the nib for a new one and it isn't making any more, but the scratches are deep enough that it is fairly noticable when the stylus runs over them.

I suppose I should be thankful that it at least still works, but holy fuck what was that bullshit.

I don't suppose anyone has suggestions for filling the scratches in, somehow?