Sorry for the quality of the picture, I am allowed to attach 10K max. I'd love to put on my site but the space is full for the moment.
I don't know how to put it into a better word. But when you lose 1 string, say the 1st string, it raises the note on others. So when you tune 1st string, other string's note will raise and you may end up tuning every strings then. And you need to go back to check that 1st string again to see if it has changed again because of tuning those others.