Tridents sink below the ground when dropped

Can confirm in 21w13a.

Can confirm in 1.17.

Can confirm in 1.17.1.

Can confirm in 21w42a. Here are some extra details regarding this problem.

The Bug:

Trident item entities appear to sink below the ground a bit when bobbing up and down.

Steps to Reproduce:

• Obtain a trident and drop it on the ground. (Press the "Q" key by default when holding it).

• Look closely at the bottom part of the trident as it bobs up and down.

• Take note as to whether or not trident item entities appear to sink below the ground a bit when bobbing up and down.

Observed Behavior:

Trident item entities appear to sink below the ground a bit when bobbing up and down.

Expected Behavior:

Trident item entities would not appear to sink below the ground a bit when bobbing up and down.