The bug
Shulker bullets will not trigger a tripwire hook. I am not sure if this is affected in 1.16.4 as well, I did not have time to check. I have done testing in the snapshot and does not seem that it is affected.
MC-203762
Tripwire hooks not activated by shulker bullets
Resolved
Fixed
4
Awesomebeaver24
(Unassigned)
Confirmed
Normal
Entities, Hitboxes
20w45a, 20w51a
1.16.4
Retrieved
Can not reproduce. The bullet often times just does not fly low enough to collide with the tripwire's hitbox.
Relates to MC-160614 MC-92875 MC-118441