Clicking on "Unknown" in the bar graph refreshes the page and pulls up an empty value filter, but does not show the company with the Unknown answer.
https://wikirate.org/Minerals_Sourcing+Company_Type?filter%5Bnot_ids%5D=&filter%5Byear%5D=latest&filter%5Bstatus%5D=exists&filter%5Bcompany_name%5D=
This is all because "Unknown" is not showing up as an option in the filter.
working on staging. will deploy soon.