Redmine

Hi, I'm running Redmine 2.3 and I can't find a way to display project hierarchy on the time time entries report (i.e. /time_entries/report?criteria%5B%5D=project).
This is an issue because some of our projects have the same name but are in a different parent project.
As we are loosing the project hierarchy information in the time entries report, we have two projects with the same name in the "Project" column of the time report view.
I was expecting to have at least some kind of "Project1 > Subproject" and "Project2 > Subproject" in the Project column. What I'm getting instead is "Subproject" and "Subproject".
I don't know if this is a bug or a feature and I didn't find any similar topic or issue when googling for it.
Is this a bug I should report by creating a ticket or is there something I'm missing?
Additional information:

sudo RAILS_ENV=development ruby1.9.3 script/about 

Environment:
  Redmine version                          2.3.1.stable
  Ruby version                             1.9.3 (x86_64-linux)
  Rails version                            3.2.13
  Environment                              development
  Database adapter                         PostgreSQL
Redmine plugins:
  redmine_task_board                       0.0.1
  timesheet                                0.0.1