Snow Golem Not producing snow

When I create Snow Golems they don't produce any snow no matter where they walk.

What I expected to happen was...:
I thought I would be able to collect the snow that they left behind

What actually happened was...:
They just walked around without leaving any snow behind.

Steps to Reproduce:
1. Create a snow golem
2. Wait for it to walk around
3. Observe that there is no snow