When you put `` effect give @s jump boost 128 (or more) '' the player instead of jumping stays on the ground without the ability to jump, and the same happens if you put levitation, which instead of levitate, you fall to I land twice as fast.
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it is good, you can use jump boost over 128 to force player to stay on the ground
This is a duplicate of MC-10755. Many effects are expected to break at high levels. Also, I can reproduce the levitation part, but the Jump boost works fine, even at level 256. The only problem with high jump boost is that it won't properly reduce fall damage.