powder snow fog does not apply to rain

Steps to reproduce the bug:
1. set the weather to rain
2. build a cube out of powder snow (I used the side lengths 10*10*10)
3. stand inside it

What i expect to happen:
No rain is rendered or the rain is rendered but the white fog is applied to it, so that you can only see it up to 3 blocks away.

What actually happens:
The rain is rendered up to the walls of the powder snow cube and it has no white tint.