Idk if the picture attached but grass somehow can generate on water or air this mostly happens on servers and its kinda annoying
MC-158091
GRASS ON WATER
Resolved
Duplicate
0
starcrater
(Unassigned)
Unconfirmed
Block states
1.14.4
Retrieved
This isn't a bug and it has nothing to do with servers, this is just because the grass generates first, then the water generates but the grass stays there.