The mechanic annoyances were the drop dash activating unintended, sending you off edges to your death, and the stopping animation where Sonic “brakes” with his feet interfering with movement while jumping. It prevents you from accelerating during the jump. This happens a lot on narrow platforms where you jump on, correct your direction not to fall off, then jumping to the next one only to realize there’s no velocity gain in the direction you’re now trying to go. Fell a lot to my death with this one.