$routerOnActivate called twice in AngularJS

Question

In one page, we have a link on click of which we make a route change.

<td>
    <a class="btn" ng-link="['ResourceList', {job_id: vm.job.job_id, resource_id: instance.id}]">See Tasks</a>
</td>

And the route is defined as in our app.js:

$routeConfig: [
      .....
      .....
      { path: "/app/task-list/:job_id/:resource_id", component: "resourcelist", name: "ResourceList" },

Now in the component's $routerOnActivate we read the $routeParams.

vm.$routerOnActivate = function (next, previous) {
    vm.job_id = next.params.job_id;
    vm.resource_id = next.params.resource_id;
    displayList(true);

But the $routerOnActivate is called twice.

Hence, displayList() is called twice. What am I doing wrong?