Both flowers and grass (as well as regional grass analogues such as roots) can be off-centered from their base block for a more natural effect. However, this does not affect the hitboxes of grass, which is inconsistent due to it affecting flowers.
MC-214613
Hitboxes of grass are not off-centered unlike flower hitboxes
Open
13
muzikbike
(Unassigned)
Confirmed
Gameplay
Low
Hitboxes
incorrect-block-hitbox, random-block-offsets
1.16.5, 21w05b, 21w06a, 21w07a, 21w08b, ..., 23w33a, 23w45a, 1.20.4, 1.21, 24w34a
Retrieved
I can confirm.