Why o why are the black key lines (piano sharps/flats) half the size of the white key lines? Come on. So it’s twice as hard to pen in a black key note as a white key note. It also makes the screen disproportionate and confusing for anyone used to the piano (and btw: the piano width: look at the upper part of the key: equal sized. )
Absurdly, too, the two neighboring white keys are even larger. It’s just crazy.