Unable to create Issue Collectors, because of required fields not visible to anonymous users

Steps to reproduce:

1. Go to Project Administration -> Issue Collectors -> Add Issue Collector
2. Key in all the required field and click Submit

Current Result:

• The page is refreshed and returns to the same page without any error message shown

Expected Result:

• Issue Collector gets created

You cannot create an issue collector for this project, because the following fields are required on the project and those field types cannot be displayed to anonymous users. If the field is changed to be optional or a default value is provided, then an Issue Collector can be created for the project. Not allowed fields: Due Date

Cause

• Due Date is set to "Required" in the project's field configuration.

Workaround:

• Set Due Date to "optional"