block that is sticked to a slime blcok moves 1 tick slower than the slime block when pushed by a piston

If you put a slime block on a piston/sticky piston and place any pushable blocks near the slime block and activate the piston, u might notice that the block moves slower than the slime block

Steps to Reporduce:

1. place a sticky piston facing any diractions

2. place a slime block on where ever the piston is facing towards to

3. place a block anywhere besides the slime block(not on top)

4. then /tick freeze

5. then activate the piston (must activate it like a 0 tick piston)

6. and /tick step 1t