Roadmap Issues null on selection of version custom field
I cannot see any issues listed in my 'Roadmap' page when I enter a 'Build in Patch version' custom field. This field I am using on a different instance of Redmine 3.2.3 shows me the 'Roadmap' with issues listed in it. why is it so?
Also only when I enable the Target Version field and enter a value in it this defect is resolved.