Fixes: #U4-2343 for api controllers, already fixed for surface controllers

src/Umbraco.Web/Mvc/PluginControllerArea.cs

@@ -85,7 +85,7 @@ namespace Umbraco.Web.Mvc
         {
             foreach (var s in apiControllers)
             {
-                this.RouteControllerPlugin(s.ControllerName, s.ControllerType, routes, "Api", "", UrlParameter.Optional, "api", isMvc: false);
+                this.RouteControllerPlugin(s.ControllerName, s.ControllerType, routes, "", "", UrlParameter.Optional, "api", isMvc: false);
             }
         }
 	}

src/Umbraco.Web/WebBootManager.cs

@@ -209,9 +209,8 @@ namespace Umbraco.Web
             var meta = PluginController.GetMetadata(controller);
             var route = RouteTable.Routes.MapHttpRoute(
                 string.Format("umbraco-{0}-{1}", "api", meta.ControllerName),
-                umbracoPath + "/Api/" + meta.ControllerName + "/{action}/{id}",//url to match
-                new { controller = meta.ControllerName, id = UrlParameter.Optional },
-                new { controller = @"(\w+)Api" }); //Must be suffixed with "Api" (i.e. MyApiController)
+                umbracoPath + "/Api/" + meta.ControllerName + "/{action}/{id}", //url to match
+                new {controller = meta.ControllerName, id = UrlParameter.Optional});                
             //web api routes don't set the data tokens object
             if (route.DataTokens == null)
             {