I was putting torches around my house and notice when i put them the snowfall particles in a determinate horizontal radius stop falling depending on the y level in relation to the light source.
I`m not sure if this is intended, so i decided to report. hope it helps

Video:
https://www.youtube.com/watch?v=0nShy5BK3To (hopefully the compression wont make it too bad to see...)

Images: