Snow particles appear anywhere, when I chop down trees!

Snow particles appear anywhere, when I chop down trees!

What I expected to happen was...:
At first, I thought snowfall works just like the picture in below

What actually happened was...:
When I obtain some items, snow particles appears anywhere

Steps to Reproduce:
1. Change weather to snow (in snowy taiga)
2. Go down to any tree and chop it
3. When you obtain logs, snow particles will appear