diff --git a/interfaces/innerkits/wm/wm_common.h b/interfaces/innerkits/wm/wm_common.h
index 7d28807b4ddd56e17563a73af6e25f07b4857898..7057ed371baa7ad91344f6c64c05142cf031af56 100644
--- a/interfaces/innerkits/wm/wm_common.h
+++ b/interfaces/innerkits/wm/wm_common.h
@@ -1162,10 +1162,10 @@ struct WindowLimits {
  * @brief An area of title buttons relative to the upper right corner of the window.
  */
 struct TitleButtonRect {
-    int32_t posX_;
-    int32_t posY_;
-    uint32_t width_;
-    uint32_t height_;
+    int32_t posX_ = 0;
+    int32_t posY_ = 0;
+    uint32_t width_ = 0;
+    uint32_t height_ = 0;
 
     bool operator==(const TitleButtonRect& a) const
     {
@@ -1177,6 +1177,14 @@ struct TitleButtonRect {
         return !this->operator==(a);
     }
 
+    void ResetRect()
+    {
+        posX_ = 0;
+        posY_ = 0;
+        width_ = 0;
+        height_ = 0;
+    }
+
     bool IsUninitializedRect() const
     {
         return (posX_ == 0 && posY_ == 0 && width_ == 0 && height_ == 0);
diff --git a/previewer/include/wm_common.h b/previewer/include/wm_common.h
index 9bf543cd3ce23dc0bf14b9c9881c92eba31a90cd..42a6f43a591e0a7b1a3108d300e0f9d607a4bd25 100644
--- a/previewer/include/wm_common.h
+++ b/previewer/include/wm_common.h
@@ -770,10 +770,10 @@ struct WindowLimits {
  * @brief An area of title buttons relative to the upper right corner of the window.
  */
 struct TitleButtonRect {
-    int32_t posX_;
-    int32_t posY_;
-    uint32_t width_;
-    uint32_t height_;
+    int32_t posX_ = 0;
+    int32_t posY_ = 0;
+    uint32_t width_ = 0;
+    uint32_t height_ = 0;
 
     bool operator==(const TitleButtonRect& a) const
     {
@@ -785,6 +785,14 @@ struct TitleButtonRect {
         return !this->operator==(a);
     }
 
+    void ResetRect()
+    {
+        posX_ = 0;
+        posY_ = 0;
+        width_ = 0;
+        height_ = 0;
+    }
+
     bool IsInsideOf(const TitleButtonRect& a) const
     {
         return (posX_ >= a.posX_ && posY_ >= a.posY_ &&
diff --git a/wm/src/window_session_impl.cpp b/wm/src/window_session_impl.cpp
index 92cc54c1f798c631e5a38f573ef6016233569b9e..578fdea3b371983c1928e41fe5d905fba1299271 100644
--- a/wm/src/window_session_impl.cpp
+++ b/wm/src/window_session_impl.cpp
@@ -56,6 +56,7 @@ namespace Rosen {
 namespace {
 constexpr HiviewDFX::HiLogLabel LABEL = {LOG_CORE, HILOG_DOMAIN_WINDOW, "WindowSessionImpl"};
 constexpr int32_t FORCE_SPLIT_MODE = 5;
+constexpr int32_t API_VERSION_15 = 15;
 
 /**
  * DFX
@@ -2294,7 +2295,9 @@ WMError WindowSessionImpl::GetTitleButtonArea(TitleButtonRect& titleButtonRect)
     res = uiContent->GetContainerModalButtonsRect(decorRect, titleButtonLeftRect);
     if (!res) {
         TLOGE(WmsLogTag::WMS_DECOR, "GetContainerModalButtonsRect failed");
-        titleButtonRect.IsUninitializedRect();
+        if (GetTargetAPIVersion() >= API_VERSION_15) { // 15: isolated version
+            titleButtonRect.ResetRect();
+        }
         return WMError::WM_OK;
     }
     float vpr = 0.f;
@@ -2352,12 +2355,17 @@ WMError WindowSessionImpl::RegisterWindowTitleButtonRectChangeListener(
                 TLOGNE(WmsLogTag::WMS_DECOR, "%{public}s window is null", where);
                 return;
             }
+            TitleButtonRect titleButtonRect;
+            if (window->GetTargetAPIVersion() >= API_VERSION_15 && // 15: isolated version
+                titleButtonLeftRect.IsUninitializedRect()) {
+                window->NotifyWindowTitleButtonRectChange(titleButtonRect);
+                return;
+            }
             float vpr = 0.f;
             auto err = window->GetVirtualPixelRatio(vpr);
             if (err != WMError::WM_OK) {
                 return;
             }
-            TitleButtonRect titleButtonRect;
             titleButtonRect.posX_ = static_cast<int32_t>(decorRect.width_) -
                 static_cast<int32_t>(titleButtonLeftRect.width_) - titleButtonLeftRect.posX_;
             titleButtonRect.posX_ = static_cast<int32_t>(titleButtonRect.posX_ / vpr);
diff --git a/wm/test/unittest/window_session_impl_test2.cpp b/wm/test/unittest/window_session_impl_test2.cpp
index 4938d574e900295a498cdbd18383ddb2d2f16ac3..ab99690e0e3be662031cbc186df2b599f23f5978 100644
--- a/wm/test/unittest/window_session_impl_test2.cpp
+++ b/wm/test/unittest/window_session_impl_test2.cpp
@@ -1060,6 +1060,32 @@ HWTEST_F(WindowSessionImplTest2, GetTitleButtonArea02, Function | SmallTest | Le
     window->Destroy();
 }
 
+/**
+ * @tc.name: GetTitleButtonArea03
+ * @tc.desc: GetTitleButtonArea
+ * @tc.type: FUNC
+ */
+HWTEST_F(WindowSessionImplTest2, GetTitleButtonArea03, Function | SmallTest | Level2)
+{
+    auto window = GetTestWindowImpl("GetTitleButtonArea03");
+    ASSERT_NE(window, nullptr);
+    TitleButtonRect titleButtonRect = { 1400, 0, 0, 0 };
+    window->property_->SetPersistentId(1);
+    window->property_->SetDisplayId(0);
+    window->windowSystemConfig_.windowUIType_ = WindowUIType::PC_WINDOW;
+    auto uiContent = std::make_unique<Ace::UIContentMocker>();
+    EXPECT_CALL(*uiContent, GetContainerModalButtonsRect(testing::_, testing::_)).WillRepeatedly(Return(false));
+    window->uiContent_ = std::move(uiContent);
+    window->SetTargetAPIVersion(14);
+    EXPECT_EQ(window->GetTitleButtonArea(titleButtonRect), WMError::WM_OK);
+    EXPECT_EQ(titleButtonRect.IsUninitializedRect(), false);
+
+    window->SetTargetAPIVersion(15);
+    EXPECT_EQ(window->GetTitleButtonArea(titleButtonRect), WMError::WM_OK);
+    EXPECT_EQ(titleButtonRect.IsUninitializedRect(), true);
+    window->Destroy();
+}
+
 /**
  * @tc.name: RegisterWindowTitleButtonRectChangeListener
  * @tc.desc: RegisterWindowTitleButtonRectChangeListener