To reproduce:
Make a command saying
/effect <player> 8 8 128
and you lose the ability to jump, happens with any number above 127
Related issues
Comments
CubeTheThird
MC-94625
Jump Boost above 127 not working
Resolved
Duplicate
0
CubeTheThird
migrated
(Unassigned)
Unconfirmed
Minecraft 15w51b
Retrieved
Duplicate of MC-10755. Limitation of byte types.