Dispensers can't shear mooshrooms and snow golems

Verification Builds:
1.16.0.63
Summary:
Dispenser can't shear mooshrooms and snow golems.Dispenser can shear sheep why dispenser can't shear moohrooms and snow golems.in java Edition Dispenser can shear mooshrooms and snow golems.
Steps to Reproduce:
1.Place a Dispenser and put a shear in the Dispenser.
2.connect at to Redstone and activate at.
3.Now dispenser can shear mooshroo.s and snow golems.
Observed Results:
Dispenser can't shear mooshrooms and snow golems.
Expected Results:
Dispenser should shear mooshrooms and snow golems.
Screenshots/Videos Attached: no