It's there a reason servers get pissed every time I ask for a paper bill instead of paying on one of those clover machines at the table

I refuse to blindly pay on those handheld machines at the table I always ask for some breakdown because it's so common to have billing errors anymore or some weird service fee/charge that I am unaware of

It always ends up with some eye roll. Plus I hate that most calculate tip post tax instead of pretax.