If amount of already owned base ingredient is less than required but non zero, missing ingredient doesn't show the difference

[tzmanish]

In below image, all is good

However, as soon as I add any number of slime balls to already owned, the count get's messed up

[AsherGlick]

I think I see what is happening
When there is a Slimeball [from Inventory] item is is taking up that first column, the second column then has this magic new quantity of Slimeball which should have originally been in the first column.

This seems to only effect raw resources in the first column, testing this out with 4 Oak Planks in the inventory created an expected result.

That first column is also what is used to determine what resources you will need, which explains why it is missing from the list of base ingredients.