[Darvince]

I have noticed this as well, it's particularly extreme when you zone an area of farms without also zoning any residential at the same time, there will be zero commuters at all to any of the farms, even after going through a cycle of loading all the neighboring tiles to see if commuters will change to commute to the new farms. I don't think I have seen the reverse situation where there are more commuters to a building than there are jobs available in the building, except in industrial where a bunch of buildings are merged and act as one entity in the game's routing anyways.

I have no idea why they have the number of jobs that it says are filled be absolutely unrelated to the number of commuters that reach the building, but it can be frustrating.