diff --git a/addons/mail/static/src/components/messaging_menu/messaging_menu.js b/addons/mail/static/src/components/messaging_menu/messaging_menu.js
index 4e5ede8f635..a9a78521090 100644
--- a/addons/mail/static/src/components/messaging_menu/messaging_menu.js
+++ b/addons/mail/static/src/components/messaging_menu/messaging_menu.js
@@ -111,12 +111,6 @@ class MessagingMenu extends Component {
              */
             return;
         }
-        // in mobile: keeps the messaging menu open in background
-        // TODO: maybe need to move this to a mobile component?
-        // task-2089887
-        if (this.env.messaging.device.isMobile) {
-            return;
-        }
         // ignore click inside the menu
         if (this.el.contains(ev.target)) {
             return;
diff --git a/addons/mail/static/src/models/chat_window/chat_window.js b/addons/mail/static/src/models/chat_window/chat_window.js
index 4d51d952696..4bb1fe2442b 100644
--- a/addons/mail/static/src/models/chat_window/chat_window.js
+++ b/addons/mail/static/src/models/chat_window/chat_window.js
@@ -50,6 +50,13 @@ function factory(dependencies) {
             if (thread && notifyServer) {
                 thread.notifyFoldStateToServer('closed');
             }
+            if (this.env.device.isMobile && !this.env.messaging.discuss.isOpen) {
+                // If we are in mobile and discuss is not open, it means the
+                // chat window was opened from the messaging menu. In that
+                // case it should be re-opened to simulate it was always
+                // there in the background.
+                this.env.messaging.messagingMenu.update({ isOpen: true });
+            }
         }
 
         expand() {
diff --git a/addons/mail/static/src/models/messaging_menu/messaging_menu.js b/addons/mail/static/src/models/messaging_menu/messaging_menu.js
index 654efa4b828..60212930d0f 100644
--- a/addons/mail/static/src/models/messaging_menu/messaging_menu.js
+++ b/addons/mail/static/src/models/messaging_menu/messaging_menu.js
@@ -16,11 +16,7 @@ function factory(dependencies) {
          * Close the messaging menu. Should reset its internal state.
          */
         close() {
-            this.update({
-                activeTabId: 'all',
-                isMobileNewMessageToggled: false,
-                isOpen: false,
-            });
+            this.update({ isOpen: false });
         }
 
         /**