1 snow block when mined with a shovel gives 2 snowballs (1 snow block when mined with silk touch)
8 snow layers when mined with a shovel gives 1 snowball whether the shovel has silk touch or not.
Not much of an issue, just seems like unexpected game play as 8 snow layers is the same as one snow block.
Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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