Entity positions are no longer accurate

Steps to Reproduce:

• Place a piston facing up

• Place a slime block on top of it

• Spawn any stationary entity on the slime (armor stand, boat, sulfur cube with a block)

• Activate the piston

• Watch the entity bounce

Observed Results:
The entity does not touch the ground until it stops bouncing. Any and all attacks aiming at the gap between the entity and the slime miss completely, which shows this isn’t just a visual issue.

Expected Results:
Entity positions are only interpolated between logic ticks, otherwise they are always accurately positioned and never skip any steps.

Screenshots/Videos attached: Yes

Notes: This issue was present in older versions and was briefly fixed for releases 26.30 and 26.40, but it is back in the preview. It is particularly egregious with Sulfur Cubes.