Fix switching back to list view from fullscreen view.

config/routes.rb

@@ -306,7 +306,7 @@ OpenProject::Application.routes.draw do
       end
 
       # states managed by client-side routing on work_package#index
-      get '/*state' => 'work_packages#index', on: :member, id: /\d+/
+      get '/*state' => 'work_packages#index', on: :collection
 
       # explicitly define index for preserving the order in which
       # the path helpers are created - this otherwise leads to

frontend/app/routing.js

@@ -42,7 +42,7 @@ angular.module('openproject')
         encode: valToString,
         decode: valFromString,
         is: regexpMatches,
-        pattern: /\/projects\/.*/
+        pattern: /.*/
       });
   })();
 
@@ -111,7 +111,7 @@ angular.module('openproject')
     })
 
     .state('work-packages.list', {
-      url: '/projects/:projectIdentifier/work_packages?query_id',
+      url: '{projectPath:projectPathType}/work_packages?query_id',
       controller: 'WorkPackagesListController',
       templateUrl: '/templates/work_packages.list.html'
     })

frontend/app/work_packages/controllers/work-package-show-controller.js

@@ -195,11 +195,11 @@ module.exports = function($scope,
   };
 
   $scope.showWorkPackageDetails = function() {
-    $state.go('work-packages.list.details.overview', {workPackageId: $scope.workPackage.props.id, projectIdentifier: $scope.projectIdentifier});
+    $state.go('work-packages.list.details.overview', {workPackageId: $scope.workPackage.props.id, projectPath: PathHelper.staticBase + '/projects/' + $scope.projectIdentifier});
   };
 
   $scope.closeDetailsView = function() {
-    $state.go('work-packages.list', {projectIdentifier: $scope.projectIdentifier});
+    $state.go('work-packages.list', {projectPath: PathHelper.staticBase + '/projects/' + $scope.projectIdentifier});
   };
 
   function getFocusAnchorLabel(tab, workPackage) {

frontend/app/work_packages/controllers/work-packages-list-controller.js

@@ -32,7 +32,9 @@ module.exports = function($scope, $rootScope, $state, $stateParams, $location, l
       AuthorisationService, UrlParamsHelper, PathHelper, Query,
       OPERATORS_AND_LABELS_BY_FILTER_TYPE, NotificationsService) {
 
-  $scope.projectIdentifier = $stateParams.projectIdentifier;
+  if ($stateParams.projectPath.indexOf(PathHelper.staticBase + '/projects') === 0) {
+    $scope.projectIdentifier = $stateParams.projectPath.replace(PathHelper.staticBase + '/projects/', '');
+  }
 
   // Setup
   function initialSetup() {