Shapeless recipes only check for number of items and number of occupied slots

The bug

Shapeless recipes only check for the correct amount of items in general and the correct amount of occupied slots. This however is not sufficient when a recipe requires the same ingredient multiple times, as can be seen in the attached screenshots.
Either a check for the correct item in each slot, or a general check that no item that is not part of the recipe is included is missing.

Original Report

Video of bug in action

Location of my datapack for testing: 
https://github.com/SamJBarney/Minecraft-Datapacks/tree/master/Redeye
 

I have a datapack that I've been working on that includes a bunch of different recipes, and I noticed that my coarse dirt recipe was giving me dirt for some reason.

Shapeless recipe for dirt: 7 of any crop item (potatoes, carrots, etc), 1 gunpowder, and 1 bonemeal

 

Shapeless recipe for coarse dirt: 4 of any crop item, 1 gunpowder, 1 bonemeal, 2 bones, and 1 charcoal.

 

It appears to be tallying up the total number of matching items and using that to select recipes.