Comment 1 for bug 1079678

This isn't unique to private projects. It's a standard issue with the way questions work.

The +addquestion doesn't check if questions have been configured at all. I did a test on qa staging and can add a question without ever configuring it on the project.

Project level
https://answers.qastaging.launchpad.net/test-public-project

Added question
https://answers.qastaging.launchpad.net/test-public-project/+question/188579