your screen will bump up and down real quick and your grounded will say true-false-true-false... in your F3 menu.
your y coordinate stays the same though!
duplicate this glitch by:
1: set down a slime block
2: stand ontop it
3: hold shift and move to an edge.
4: now keep holding shift and move back to the middle of the slimeblock
5: open F3.
Duplicate of Unresolved
MC-44352
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