Verification Builds:
1.16.0.59
Summary:
Baby piglins can't ride on the back of baby hoglin. I saw in wiki bedrock page baby piglins can ride on the back of baby hoglin and baby piglins can now ride on top of each other on a baby hoglin. up to three baby piglins can climb on at once but it donot work.baby piglins should climb on baby hoglin top to tree at once. in game a single baby piglin can't ride on a baby hoglin.in java every baby piglins can ride on a baby hoglin. Baby piglins play with hoglin.in bedrock anything doesn't work.
Steps to Reproduce:

1. Find baby piglins and a hoglin.
2. Baby piglins can play with hoglin.
3. Every baby piglins can ride on the back if baby hoglin.
4. Every baby piglins can ride on top of each other on a baby hoglin. Up to three baby piglins can climb on at once.
5. .When baby piglins sees the hoglin the baby will run to play with baby hoglin.
   Observed results:
   Any baby piglins can't ride on the back of baby hoglin.A single baby piglin can't ride on baby hoglin.
   Expected Results:
   Every baby piglin can ride on baby hoglin.baby piglins can ridevon top of each other on a baby hoglin,Up to three baby piglins can climb on at once.
   Screenshots/Video Attached: yes