diff --git a/panels/dock/dockhelper.cpp b/panels/dock/dockhelper.cpp
index 50a603a9a..bb089675b 100644
--- a/panels/dock/dockhelper.cpp
+++ b/panels/dock/dockhelper.cpp
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2024 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -69,7 +69,9 @@ bool DockHelper::eventFilter(QObject *watched, QEvent *event)
 
     // skip tooltip windows
     if (window->flags().testFlags(Qt::ToolTip)) {
-        return false;
+        if (!window->property("isDockPreview").toBool()) {
+            return false;
+        }
     }
 
     auto topTransientParent = window;
diff --git a/panels/dock/taskmanager/x11preview.cpp b/panels/dock/taskmanager/x11preview.cpp
index 34e494b7d..6513ed377 100644
--- a/panels/dock/taskmanager/x11preview.cpp
+++ b/panels/dock/taskmanager/x11preview.cpp
@@ -695,6 +695,9 @@ void X11WindowPreviewContainer::initUI()
 
     setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
     winId();
+    if (auto handle = this->windowHandle()) {
+        handle->setProperty("isDockPreview", true);
+    }
     DPlatformHandle handler(this->windowHandle());
     handler.setShadowRadius(12 * qApp->devicePixelRatio());
     handler.setShadowColor(QColor(0, 0, 0, 0.6 * 255));