I believe I came across a bug in my Redmine instance. When I create issues->features and view the gantt chart, it does not always sort the parent/child relationship correctly. It displayes child features uner the wrong parent. However, I am sure that I entered in the data correctly for the given issue because when I do into the details of a particular issue, all of the listed "sub tasks" are correct. I have verified this in multiple browswers and multiple computers.