Random issue with non-loaded libraries and router

[gen4sp]

I use ocLazyLoad with router

.state("profile", {
      url: "/profile",
      templateUrl: "/views/profile/main.html",
      data: {pageTitle: 'User Profile'},
      controller: "UserProfileController",
      resolve: {
        deps: ['$ocLazyLoad', function ($ocLazyLoad) {
          return $ocLazyLoad.load({
            name: 'MetronicApp',
            insertBefore: '#ng_load_plugins_before', // load the above css files before '#ng_load_plugins_before'
            files: [
              '/assets/global/plugins/typehead-js/typeahead.bundle.min.js',
              '/assets/global/plugins/typehead-js/bloodhound.min.js',
              '/assets/global/plugins/angularjs/plugins/angular-typeahead.min.js',

              '/assets/global/plugins/bootstrap-switch/css/bootstrap-switch.min.css',
              '/assets/global/plugins/bootstrap-switch/js/bootstrap-switch.min.js',
              '/assets/global/plugins/angularjs/plugins/angular-bootstrap-switch/angular-bootstrap-switch.min.js',

              '/assets/global/plugins/morris/morris.css',
              '/assets/global/plugins/morris/morris.min.js',
              '/assets/global/plugins/morris/raphael-min.js',

              '/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.css',
              '/assets/pages/css/profile.css',

              '/assets/global/plugins/jquery.sparkline.min.js',
              '/assets/global/plugins/bootstrap-fileinput/bootstrap-fileinput.js',

              '/assets/pages/scripts/profile.js',

              '/js/controllers/UserProfileController.js'
            ]
          });
        }]
      }
    })

Sometimes I experience errors like $(...).tooltip is not a function or other similar ones

It happens randomly and somehow connected with navigation through pages and refreshing page.

My thought is some libraries are not loaded in sequence or there are some hidden errors during loading.

How can I debug it? Are the files loading sequentially or parallel?

Glad for any help. Thanks!