Given Item (/give) adding to stat.drop

When an objective is created with criteriaType "stat.drop", an item given to the player will increment the score. To recreate:

1. Create an objective, in this case with the command:

/scoreboard objectives add dropItem stat.drop

2. Display the objective for visualisation:

/scoreboard objectives setdisplay sidebar dropItem

3. Give yourself an item:

/give @p snowball

The counter will increase, and I would assume this is not intended.