Yeah. In modern “immediate response” platformers (well “modern”, I think the original Super Mario Bros does it, too, and it’s 4 years older), you usually get few frames after you ran off the platform to hit jump and it will register as if you pressed jump in the very last moment.
This is not necessary in PoP, because you need to plan ahead and the prince will actually only jump at the sensible time.
It’s a different type of game entirely and people used to the other, more action-y genre of Mario-likes may have a hard time getting used to it.
And he’s moving in discrete steps (I think 3 per tile?) You cannot just move pixel by pixel.