I have been using the performance lists and performances exclusively since I bought the machine… there are no known “bugs” that I know of.

It may not always work the way you expect, and you do have to learn what parameters do NOT get saved to the performance list, you also have to learn how it interacts with not only the arranger holds and the one touch holds, but also the “Piano“ and “Organ“ buttons, Which override a LOT of performance parameters.