diff --git a/addons/mail/static/src/core/common/chat_window_service.js b/addons/mail/static/src/core/common/chat_window_service.js
index 6fca4a347c9..d1abe2a0f3d 100644
--- a/addons/mail/static/src/core/common/chat_window_service.js
+++ b/addons/mail/static/src/core/common/chat_window_service.js
@@ -118,6 +118,9 @@ export class ChatWindowService {
             );
             return this.store.chatWindows[index]; // return reactive version
         }
+        if (chatWindow.hidden) {
+            this.makeVisible(chatWindow);
+        }
         assignDefined(chatWindow, data);
         return chatWindow;
     }
diff --git a/addons/mail/static/tests/chat_window/chat_window_tests.js b/addons/mail/static/tests/chat_window/chat_window_tests.js
index e0e20cd133d..221bc310048 100644
--- a/addons/mail/static/tests/chat_window/chat_window_tests.js
+++ b/addons/mail/static/tests/chat_window/chat_window_tests.js
@@ -465,6 +465,38 @@ QUnit.test("closing hidden chat window", async (assert) => {
     await contains(":not(.o-mail-ChatWindowHiddenMenu) .o-mail-ChatWindow:contains(Ch_4)");
 });
 
+QUnit.test("Opening hidden chat window from messaging menu", async (assert) => {
+    const pyEnv = await startServer();
+    pyEnv["discuss.channel"].create([{ name: "Ch_1" }, { name: "Ch_2" }, { name: "Ch_3" }]);
+    patchUiSize({ width: 900 });
+    assert.ok(
+        CHAT_WINDOW_END_GAP_WIDTH * 2 + CHAT_WINDOW_WIDTH * 2 + CHAT_WINDOW_INBETWEEN_WIDTH < 900,
+        "should have enough space to open 2 chat windows simultaneously"
+    );
+    assert.ok(
+        CHAT_WINDOW_END_GAP_WIDTH * 2 + CHAT_WINDOW_WIDTH * 3 + CHAT_WINDOW_INBETWEEN_WIDTH * 2 >
+            900,
+        "should not have enough space to open 3 chat windows simultaneously"
+    );
+    await start();
+    await click("i[aria-label='Messages']");
+    await click(".o-mail-NotificationItem:contains(Ch_1)");
+    await click("i[aria-label='Messages']");
+    await click(".o-mail-NotificationItem:contains(Ch_2)");
+    await click("i[aria-label='Messages']");
+    await click(".o-mail-NotificationItem:contains(Ch_3)");
+    await click(".o-mail-ChatWindowHiddenToggler");
+    await contains(":not(.o-mail-ChatWindowHiddenMenu) .o-mail-ChatWindow:contains(Ch_1)");
+    await contains(".o-mail-ChatWindowHiddenMenu .o-mail-ChatWindow:contains(Ch_2)");
+    await contains(":not(.o-mail-ChatWindowHiddenMenu) .o-mail-ChatWindow:contains(Ch_3)");
+    await click("i[aria-label='Messages']");
+    await click(".o-mail-NotificationItem:contains(Ch_2)");
+    await click(".o-mail-ChatWindowHiddenToggler");
+    await contains(":not(.o-mail-ChatWindowHiddenMenu) .o-mail-ChatWindow:contains(Ch_1)");
+    await contains(":not(.o-mail-ChatWindowHiddenMenu) .o-mail-ChatWindow:contains(Ch_2)");
+    await contains(".o-mail-ChatWindowHiddenMenu .o-mail-ChatWindow:contains(Ch_3)");
+});
+
 QUnit.test(
     "focus next visible chat window when closing current chat window with ESCAPE [REQUIRE FOCUS]",
     async (assert) => {