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The player cube has a 1 pixel line below it that is responsible for jumping.

That pixel is also used to detect bhop block interaction. This means that even if the player cube (green) is perfectly overlapping the bhop block (orange), the player will not be able to jump.

Scenario	Result
	This will not result in a jump
	Since the jump is calculated from the player’s current position, this results in a low height jump
	This results in a maximum height jump