As Jayson has said, this is not a bug and was an intentional decision.Not a bug, if you used inspect element and found the settings, you’d actually see that it’s expicitly set. It’s easily configurable.
Snow on mobile would easily turn any phone into a frying pan because of how compact they are. We’d need to toggle down and slow down snow a bit. But an easy change regardless of that, just not really viable in my mind.
