The tip percentages are all misleading. They seem to be based on your undiscounted total. For example, if your total is $15, your delivery fee of $3.99 is waived and shows it crossed out, replaced with $0.00, and is not included in your total. The same goes for a different $0.75 discount in the taxes/fees. However, your tip percentages add these to the total anyway and determine the tip amount. Your tip amount doesn't follow from the actual pre-tip total you pay. It's not a lot, but shady as f.