diff --git a/web/static/src/ts/main.ts b/web/static/src/ts/main.ts
index c9e204dd..ea5d9410 100644
--- a/web/static/src/ts/main.ts
+++ b/web/static/src/ts/main.ts
@@ -30,16 +30,3 @@ document.addEventListener("DOMContentLoaded", async function() {
   // For debugging purpose, we keep a reference to the root widget in odoo
   (<any>window).odoo.rootWidget = rootWidget;
 });
-
-let testMixin = Base =>
-  class extends Base {
-    calc() {
-      return 32;
-    }
-  };
-
-class Foo {}
-
-class Bar extends testMixin(Foo) {}
-
-console.log(new Bar().calc());
diff --git a/web/static/src/ts/store/action_manager_mixin.ts b/web/static/src/ts/store/action_manager_mixin.ts
index 83f54501..452883d5 100644
--- a/web/static/src/ts/store/action_manager_mixin.ts
+++ b/web/static/src/ts/store/action_manager_mixin.ts
@@ -49,7 +49,13 @@ export type ActionDescription =
   | ActWindowActionDescription;
 
 export type ActionInfo = ClientActionInfo | ActWindowInfo;
-export type ActionStack = ActionInfo[];
+
+export interface Action {
+  id: number;
+  widget?: Widget<any, any>;
+  executor(parent: Widget<any, any>): Promise<Widget<any, any> | null>;
+  activate(): void;
+}
 
 //------------------------------------------------------------------------------
 // Action Manager Mixin
@@ -60,55 +66,61 @@ export function actionManagerMixin<T extends ReturnType<typeof rpcMixin>>(
 ) {
   return class extends Base {
     actionCache: { [key: number]: Promise<ActionDescription> } = {};
+    currentAction?: Action;
+    lastAction?: Action;
 
     async doAction(request: ActionRequest) {
+      const self = this;
       const descr = await this.loadAction(request);
+      let executor;
       switch (descr.type) {
         case "ir.actions.client":
-          return this.doClientAction(descr);
+          executor = this.doClientAction(descr);
+          break;
         case "ir.actions.act_window":
-          return this.doActWindowAction(descr);
+          executor = this.doActWindowAction(descr);
+          break;
         default:
           throw new Error("unhandled action");
       }
+      const action: Action = {
+        id: this.generateID(),
+        executor,
+        activate() {
+          if (self.currentAction && self.currentAction.widget) {
+            self.currentAction.widget.destroy();
+          }
+          self.currentAction = action;
+          self.update({
+            inHome: false
+          });
+          document.title = descr.name + " - Odoo";
+        }
+      };
+      self.lastAction = action;
+      this.trigger("update_action", action);
     }
 
     doActWindowAction(descr: ActWindowActionDescription) {
-      let title = descr.name;
-      this.update({
-        inHome: false,
-        stack: [
-          {
-            id: 1,
-            context: {},
-            target: "current",
-            type: "act_window",
-            title,
-            Widget: View
-          }
-        ]
-      });
-      document.title = descr.name + " - Odoo";
+      return async function executor(this: Action, parent: Widget<any, any>) {
+        const widget = new View(parent, {});
+        const div = document.createElement("div");
+        await widget.mount(div);
+        this.widget = widget;
+        return widget;
+      };
     }
 
     doClientAction(descr: ClientActionDescription) {
       let key = descr.tag;
-      let title = descr.name;
       let Widget = this.actionRegistry.get(key);
-      this.update({
-        inHome: false,
-        stack: [
-          {
-            id: 1,
-            context: {},
-            target: "current",
-            type: "client",
-            title,
-            Widget: Widget
-          }
-        ]
-      });
-      document.title = descr.name + " - Odoo";
+      return async function executor(this: Action, parent: Widget<any, any>) {
+        const widget = new Widget(parent, {});
+        const div = document.createElement("div");
+        await widget.mount(div);
+        this.widget = widget;
+        return widget;
+      };
     }
 
     loadAction(id: number): Promise<ActionDescription> {
diff --git a/web/static/src/ts/store/notification_mixin.ts b/web/static/src/ts/store/notification_mixin.ts
index 4fdd4c35..59d04077 100644
--- a/web/static/src/ts/store/notification_mixin.ts
+++ b/web/static/src/ts/store/notification_mixin.ts
@@ -1,6 +1,5 @@
 import { Type } from "../core/component";
 import { BaseStore } from "./store";
-import { idGenerator } from "../core/utils";
 
 //------------------------------------------------------------------------------
 // Notifications Mixin
@@ -15,8 +14,6 @@ export interface INotification {
 
 export function notificationMixin<T extends Type<BaseStore>>(Base: T) {
   return class extends Base {
-    generateID = idGenerator();
-
     addNotification(notif: Partial<INotification>): number {
       const id = this.generateID();
       const defaultVals = {
diff --git a/web/static/src/ts/store/store.ts b/web/static/src/ts/store/store.ts
index aa0331e3..df00c900 100644
--- a/web/static/src/ts/store/store.ts
+++ b/web/static/src/ts/store/store.ts
@@ -1,12 +1,9 @@
 import { EventBus } from "../core/event_bus";
 import { Registry } from "../core/registry";
+import { idGenerator } from "../core/utils";
 import { RPC } from "../services/ajax";
 import { IRouter, Query } from "../services/router";
-import {
-  actionManagerMixin,
-  ActionStack,
-  ActionWidget
-} from "./action_manager_mixin";
+import { actionManagerMixin, ActionWidget } from "./action_manager_mixin";
 import { notificationMixin } from "./notification_mixin";
 import { rpcMixin } from "./rpc_mixin";
 import { MenuItem } from "./store";
@@ -15,7 +12,7 @@ import { MenuItem } from "./store";
 // Types
 //------------------------------------------------------------------------------
 
-export { ActionStack, ActionWidget } from "./action_manager_mixin";
+export { ActionWidget } from "./action_manager_mixin";
 export { INotification } from "./notification_mixin";
 export { RPC } from "./rpc_mixin";
 
@@ -40,7 +37,6 @@ export interface MenuInfo {
 }
 
 export interface State {
-  stack: ActionStack;
   inHome: boolean;
   currentApp: MenuItem | null;
 }
@@ -55,7 +51,6 @@ export interface Services {
 //------------------------------------------------------------------------------
 export class BaseStore extends EventBus {
   state: State = {
-    stack: [],
     inHome: false,
     currentApp: null
   };
@@ -63,6 +58,7 @@ export class BaseStore extends EventBus {
   services: Services;
   actionRegistry: Registry<ActionWidget>;
   currentQuery: Query;
+  generateID = idGenerator();
 
   constructor(
     services: Services,
@@ -115,7 +111,6 @@ export class Store extends actionManagerMixin(
       this.state.inHome = true;
       this.services.router.navigate({ home: true });
     }
-
     this.services.router.on("query_changed", this, this.updateAction);
     this.updateAction(this.services.router.getQuery());
   }
diff --git a/web/static/src/ts/widgets/action_container.ts b/web/static/src/ts/widgets/action_container.ts
deleted file mode 100644
index 9ad3fde3..00000000
--- a/web/static/src/ts/widgets/action_container.ts
+++ /dev/null
@@ -1,51 +0,0 @@
-import { ActionStack } from "../store/store";
-import { Widget } from "./widget";
-
-//------------------------------------------------------------------------------
-// Types
-//------------------------------------------------------------------------------
-
-export interface Props {
-  stack: ActionStack;
-}
-
-//------------------------------------------------------------------------------
-// Action Container
-//------------------------------------------------------------------------------
-
-export class ActionContainer extends Widget<Props, {}> {
-  template = "web.action_container";
-  currentWidget: any;
-
-  willStart() {
-    return this.setContentWidget();
-  }
-
-  mounted() {
-    if (this.currentWidget && this.currentWidget.el) {
-      this.el!.appendChild(this.currentWidget.el);
-      this.currentWidget.__mount();
-    }
-  }
-
-  shouldUpdate(nextProps: Props) {
-    if (nextProps.stack !== this.props.stack) {
-      this.props = nextProps;
-      this.setContentWidget();
-    }
-    return false;
-  }
-
-  async setContentWidget() {
-    const info = this.props.stack[this.props.stack.length - 1];
-    if (info) {
-      const Widget = info.Widget;
-      let widget = new Widget(this, {});
-      await widget.mount(this.el || document.createElement("div"));
-      if (this.currentWidget) {
-        this.currentWidget.destroy();
-      }
-      this.currentWidget = widget;
-    }
-  }
-}
diff --git a/web/static/src/ts/widgets/root.ts b/web/static/src/ts/widgets/root.ts
index 2aba1659..552daf10 100644
--- a/web/static/src/ts/widgets/root.ts
+++ b/web/static/src/ts/widgets/root.ts
@@ -1,11 +1,11 @@
 import { debounce } from "../core/utils";
 import { Env } from "../env";
 import { State, Store } from "../store/store";
-import { ActionContainer } from "./action_container";
 import { HomeMenu } from "./home_menu";
 import { Navbar } from "./navbar";
 import { Notification } from "./notification";
 import { Widget } from "./widget";
+import { Action } from "../store/action_manager_mixin";
 
 //------------------------------------------------------------------------------
 // Root Widget
@@ -13,7 +13,7 @@ import { Widget } from "./widget";
 
 export class Root extends Widget<Store, State> {
   template = "web.web_client";
-  widgets = { Navbar, HomeMenu, ActionContainer };
+  widgets = { Navbar, HomeMenu };
 
   notifications: { [id: number]: Notification } = {};
   store: Store;
@@ -53,5 +53,21 @@ export class Root extends Widget<Store, State> {
         this.render();
       }
     }, 50));
+
+    // actions
+    this.store.on("update_action", this, this.applyAction);
+    if (this.store.lastAction) {
+      this.applyAction(this.store.lastAction);
+    }
+  }
+
+  async applyAction(action: Action) {
+    const widget = await action.executor(this);
+    if (widget) {
+      // to do: call some public method of widget instead...
+      (<HTMLElement>this.refs.content).appendChild(widget.el!);
+      widget.__mount();
+      action.activate();
+    }
   }
 }
diff --git a/web/static/src/xml/templates.xml b/web/static/src/xml/templates.xml
index f5579cc5..86321cad 100644
--- a/web/static/src/xml/templates.xml
+++ b/web/static/src/xml/templates.xml
@@ -4,9 +4,7 @@
   <div t-name="web.web_client" class="o_web_client">
     <t t-widget="Navbar" t-props="{inHome:state.inHome,app:state.currentApp}" />
     <t t-widget="HomeMenu" t-if="state.inHome" t-keep-alive="1" t-props="{menuInfo:props.menuInfo}" />
-    <t t-else="1">
-      <t t-widget="ActionContainer" t-props="{stack:state.stack}" t-keep-alive="1"/>
-    </t>
+    <div class="o_content" t-att-class="state.inHome ? 'o_hidden' : ''" t-ref="content"/>
     <div class="o_notification_container" t-ref="notification_container"/>
     <div class="o_loading d-none" t-ref="loading_indicator">Loading</div>
   </div>
diff --git a/web/static/tests/store/store.test.ts b/web/static/tests/store/store.test.ts
index 1f6aaa66..1e4d33b3 100644
--- a/web/static/tests/store/store.test.ts
+++ b/web/static/tests/store/store.test.ts
@@ -113,6 +113,7 @@ describe("state transitions", () => {
     expect(store.services.router.getQuery()).toEqual({ home: true });
 
     await promise;
+    store.lastAction!.activate();
     expect(store.state.inHome).toBe(false);
     expect(store.services.router.getQuery()).toEqual({
       action_id: "131",
@@ -138,6 +139,8 @@ describe("state transitions", () => {
     const promise = store.activateMenuItem(96);
     expect(document.title).toBe("Odoo");
     await promise;
+    store.lastAction!.activate();
+
     expect(document.title).toBe("Discuss - Odoo");
 
     store.toggleHomeMenu();
diff --git a/web/static/tests/widgets/__snapshots__/action_container.test.ts.snap b/web/static/tests/widgets/__snapshots__/action_container.test.ts.snap
deleted file mode 100644
index 134e526b..00000000
--- a/web/static/tests/widgets/__snapshots__/action_container.test.ts.snap
+++ /dev/null
@@ -1,7 +0,0 @@
-// Jest Snapshot v1, https://goo.gl/fbAQLP
-
-exports[`can be rendered with a non empty stack 1`] = `"<div class=\\"o_content\\"><div>some client action</div></div>"`;
-
-exports[`can be rendered with an empty stack 1`] = `"<div class=\\"o_content\\"></div>"`;
-
-exports[`content is updated properly when new props are given 1`] = `"<div class=\\"o_content\\"><div>some client action</div></div>"`;
diff --git a/web/static/tests/widgets/__snapshots__/root.test.ts.snap b/web/static/tests/widgets/__snapshots__/root.test.ts.snap
index 5f8b0dc7..2ba189cd 100644
--- a/web/static/tests/widgets/__snapshots__/root.test.ts.snap
+++ b/web/static/tests/widgets/__snapshots__/root.test.ts.snap
@@ -26,6 +26,7 @@ exports[`can be rendered (in home menu) 1`] = `
       </a>
     </div>
   </div>
+    <div class=\\"o_content o_hidden\\"></div>
     <div class=\\"o_notification_container\\"></div>
     <div class=\\"o_loading d-none\\">Loading</div>
   </div>"
@@ -46,7 +47,7 @@ exports[`if url has action_id, will render action and navigate to proper menu_id
     
   </div>
     
-      <div class=\\"o_content\\"><div class=\\"o_discuss\\">
+    <div class=\\"o_content\\"><div class=\\"o_discuss\\">
     <span>DISCUSS!!</span>
     <button>Reset first counter</button>
     <button>Reset counter 2 in 3s</button>
@@ -73,7 +74,6 @@ exports[`if url has action_id, will render action and navigate to proper menu_id
     <button>Add notif</button>
     <button>Add sticky notif</button>
   </div></div>
-    
     <div class=\\"o_notification_container\\"></div>
     <div class=\\"o_loading d-none\\">Loading</div>
   </div>"
@@ -94,7 +94,7 @@ exports[`start with no action => clicks on client action => discuss is rendered
     
   </div>
     
-      <div class=\\"o_content\\"><div class=\\"o_discuss\\">
+    <div class=\\"o_content\\"><div class=\\"o_discuss\\">
     <span>DISCUSS!!</span>
     <button>Reset first counter</button>
     <button>Reset counter 2 in 3s</button>
@@ -121,7 +121,6 @@ exports[`start with no action => clicks on client action => discuss is rendered
     <button>Add notif</button>
     <button>Add sticky notif</button>
   </div></div>
-    
     <div class=\\"o_notification_container\\"></div>
     <div class=\\"o_loading d-none\\">Loading</div>
   </div>"
diff --git a/web/static/tests/widgets/action_container.test.ts b/web/static/tests/widgets/action_container.test.ts
deleted file mode 100644
index 3928f521..00000000
--- a/web/static/tests/widgets/action_container.test.ts
+++ /dev/null
@@ -1,70 +0,0 @@
-import { Env, makeEnv } from "../../src/ts/env";
-import { ActionStack, Store } from "../../src/ts/store/store";
-import { ActionContainer, Props } from "../../src/ts/widgets/action_container";
-import { Widget } from "../../src/ts/widgets/widget";
-import * as helpers from "../helpers";
-
-//------------------------------------------------------------------------------
-// Setup and helpers
-//------------------------------------------------------------------------------
-
-let fixture: HTMLElement;
-let store: Store;
-let env: Env;
-let props: Props;
-let templates: string;
-
-beforeAll(async () => {
-  templates = await helpers.loadTemplates();
-});
-
-beforeEach(() => {
-  fixture = helpers.makeTestFixture();
-  store = helpers.makeTestStore();
-  env = makeEnv(store, templates);
-  props = { stack: [] };
-});
-
-afterEach(() => {
-  fixture.remove();
-});
-
-class ClientAction extends Widget<{}, {}> {
-  inlineTemplate = "<div>some client action</div>";
-}
-
-const demoStack: ActionStack = [
-  {
-    id: 33,
-    context: {},
-    title: "some title",
-    target: "new",
-    type: "client",
-    Widget: ClientAction
-  }
-];
-
-//------------------------------------------------------------------------------
-// Tests
-//------------------------------------------------------------------------------
-
-test("can be rendered with an empty stack", async () => {
-  const container = new ActionContainer(env, props);
-  await container.mount(fixture);
-  expect(fixture.innerHTML).toMatchSnapshot();
-});
-
-test("can be rendered with a non empty stack", async () => {
-  props.stack = demoStack;
-  const container = new ActionContainer(env, props);
-  await container.mount(fixture);
-  expect(fixture.innerHTML).toMatchSnapshot();
-});
-
-test("content is updated properly when new props are given", async () => {
-  const container = new ActionContainer(env, props);
-  await container.mount(fixture);
-  await container.updateProps({ stack: demoStack });
-  await helpers.nextTick();
-  expect(fixture.innerHTML).toMatchSnapshot();
-});
diff --git a/web/static/tests/widgets/root.test.ts b/web/static/tests/widgets/root.test.ts
index 37c4a26e..7ded0172 100644
--- a/web/static/tests/widgets/root.test.ts
+++ b/web/static/tests/widgets/root.test.ts
@@ -45,12 +45,12 @@ test("if url has action_id, will render action and navigate to proper menu_id",
 
   const root = new Root(env, store);
   await root.mount(fixture);
+  await helpers.nextTick();
   expect(env.services.router.getQuery()).toEqual({
     action_id: "131",
     menu_id: "96"
   });
   expect(fixture.innerHTML).toMatchSnapshot();
-  // we check here that the url was changed to set app id as menu_id
 });
 
 test("start with no action => clicks on client action => discuss is rendered", async () => {