the entity snowball breaks when inside a layer of snow, the snowball will break at the top like the snow is a full block
steps to recreate problem
get a snowball and throw it at a thin layer of snow like your throwing it through the snow layer
MC-100240
snowball entity collides with top of snow layer
Resolved
Awaiting Response
1
Is this still an issue in the most recent versions (currently that is 1.10.2, or 16w43a) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.