lead source report not working for known pick list items
However, I then created a simple Report to search for contacts with Lead Source equal to the same pick-listed Lead Source. The report comes back emtpy, and it should return about 150 contacts.
Can you share a screenshot of your report filters as well as a screenshot of a contact record that should be displayed?
It may be the date range that is incorrect, or you are not showing all contacts. It's usually due to some filter if you cannot see them, but hard to tell without seeing the data