/effects @p 8 255 255 only gives you level 1 of jump boost, The world i'm using this in is a superflat world with only air, that I used /setblock to create a block to start building my map on. I typed in /effects @p 8 255 255 and It says I have "Jump boost" for 30 seconds. But when the timer runs out, the effect is still there. The jump boost also only acts level one. Please fix, Thanks!

• Jasher