Pouring Water on Snow Does Not Drop Snowballs

I was trying to make a fully automatic snow farm so the water triggers every so often and pushes snow the golems create into a hopper.

The snow was supposed to turn into snowballs.

But what actually happened was that it disappeared and nothing was dropped.
I also tried putting water on snow spawned naturally but nothing happened.

Steps to Reproduce:
1. Find some naturally spawned snow or snow spawned by snow golems.
2. Pour a bucket of water on the snow.
3. Snowballs aren't dropped.

P.S. I hope this is what you want to happen it will mess up a lot of fully automated snowfarms.