Using iron router with angular meta makes controllers load twice

I have a Meteor app using angular-meteor. Now I need to load various angular modules depending on url. I added a hardware router to my application to do this and I keep on processing routes for each module using ngRoute and anchor nav, but it behaves strangely if the url contains parameters. I made a small test case which is available here:

https://github.com/clouchtibat/iron-router-ng-route

If you click on the "truc" link and then on "test", the following route changes will cause the controller to instantiate twice. It works if urls have no parameters.

I have also tested with ui-router (on the c-ui-router branch) and the problem is the same, but in addition to that there is duplication.

Is this a bug in one of the two routers or is there something wrong with my implementation?