diff --git a/modules/services/embeddedAppSessionManager.js b/modules/services/embeddedAppSessionManager.js
index eec2b2376..bf38fd007 100644
--- a/modules/services/embeddedAppSessionManager.js
+++ b/modules/services/embeddedAppSessionManager.js
@@ -183,7 +183,19 @@ function createEmbeddedAppSessionManager({ mainWindow, launchStandalone, powerMo
         // native child view transparent lets the parent navigation material
         // continue behind the embedded sidebar without color approximation.
         view.setBackgroundColor?.('#00000000');
-        const session = { action: appAction, view, bounds: { x: 0, y: 44, width: 1, height: 1 }, insets: null };
+        const initialParentBounds = mainWindow.getContentBounds();
+        const defaultBounds = {
+            x: 0,
+            y: 44,
+            width: Math.max(1, initialParentBounds.width),
+            height: Math.max(1, initialParentBounds.height - 44),
+        };
+        const session = {
+            action: appAction,
+            view,
+            bounds: defaultBounds,
+            insets: getBoundsInsets(defaultBounds, initialParentBounds),
+        };
         sessions.set(appAction, session);
         mainWindow.contentView.addChildView(view);
         view.setVisible(false);
@@ -239,9 +251,31 @@ function createEmbeddedAppSessionManager({ mainWindow, launchStandalone, powerMo
         if (!session || session.view.webContents.isDestroyed()) {
             return { success: false, error: '内嵌应用会话不存在。' };
         }
-        session.view.setBounds(normalizeBounds(session.bounds, mainWindow.getContentBounds()));
+        const parentBounds = mainWindow.getContentBounds();
+        if (session.insets) {
+            session.bounds = boundsFromInsets(session.insets, parentBounds);
+        } else if ((session.bounds.width || 0) <= 1 || (session.bounds.height || 0) <= 1) {
+            session.bounds = {
+                x: 0,
+                y: 44,
+                width: parentBounds.width,
+                height: Math.max(1, parentBounds.height - 44),
+            };
+            session.insets = getBoundsInsets(session.bounds, parentBounds);
+        }
+        if (mainWindow && !mainWindow.isDestroyed()) {
+            try {
+                mainWindow.contentView.removeChildView(session.view);
+                mainWindow.contentView.addChildView(session.view);
+            } catch { /* ignored */ }
+        }
+        session.view.setBounds(normalizeBounds(session.bounds, parentBounds));
         session.view.setVisible(true);
         activeAction = appAction;
+        try {
+            session.view.webContents?.focus?.();
+            session.view.webContents?.invalidate?.();
+        } catch { /* ignored */ }
         return { success: true };
     }
 
@@ -252,6 +286,9 @@ function createEmbeddedAppSessionManager({ mainWindow, launchStandalone, powerMo
         if (!session || session.view.webContents.isDestroyed()) {
             return { success: false, error: '内嵌应用会话不存在。' };
         }
+        if ((Number(bounds?.width) || 0) <= 1 || (Number(bounds?.height) || 0) <= 1) {
+            return { success: true, ignored: true };
+        }
         const parentBounds = mainWindow.getContentBounds();
         const zoomFactor = mainWindow.webContents?.getZoomFactor?.() || 1;
         session.bounds = normalizeBounds(scaleBounds(bounds, zoomFactor), parentBounds);
diff --git a/modules/ui-system/next-shell/next-shell-controller.js b/modules/ui-system/next-shell/next-shell-controller.js
index ceb305ae0..05b90a637 100644
--- a/modules/ui-system/next-shell/next-shell-controller.js
+++ b/modules/ui-system/next-shell/next-shell-controller.js
@@ -158,20 +158,34 @@
 
     function syncEmbeddedBounds(view) {
         if (view?.kind !== 'embedded' || !view.container.isConnected) return;
-        embeddedAppController?.setBounds(view.action, getEmbeddedBounds(view.container))?.catch(error => {
+        const bounds = getEmbeddedBounds(view.container);
+        if (bounds.width <= 1 || bounds.height <= 1) return;
+        embeddedAppController?.setBounds(view.action, bounds)?.catch(error => {
             console.warn(`[NextUI] Failed to resize embedded app ${view.action}:`, error);
         });
     }
 
     function syncEmbeddedActivation() {
-        const activeView = appTabHost.views.get(appTabHost.activeViewId);
+        const activeViewId = appTabHost.activeViewId;
+        const activeView = appTabHost.views.get(activeViewId);
         const action = mounted && !restoringTabs && !overlayCoordinator?.active && activeView?.kind === 'embedded'
             ? activeView.action
             : null;
         const activation = embeddedAppController?.activate(action);
         if (!activation) return;
         trackTabPromise(`activate:${action || 'home'}`, activation).then(result => {
-            if (result?.success && activeView?.kind === 'embedded') syncEmbeddedBounds(activeView);
+            if (!mounted || appTabHost.activeViewId !== activeViewId) return;
+            if (result?.success && activeView?.kind === 'embedded') {
+                syncEmbeddedBounds(activeView);
+                const scheduleFrame = typeof window !== 'undefined' && typeof window.requestAnimationFrame === 'function'
+                    ? window.requestAnimationFrame
+                    : (typeof requestAnimationFrame === 'function' ? requestAnimationFrame : fn => setTimeout(fn, 16));
+                scheduleFrame(() => {
+                    if (mounted && appTabHost.activeViewId === activeViewId) {
+                        syncEmbeddedBounds(activeView);
+                    }
+                });
+            }
         }).catch(error => console.warn('[NextUI] Failed to activate embedded app:', error));
     }
 
@@ -378,6 +392,8 @@
             }
             if (!result?.success) throw new Error(result?.error || '应用无法内嵌打开。');
             container.dataset.state = 'ready';
+            const statusNode = container.querySelector('.next-ui-embedded-app-status');
+            if (statusNode) statusNode.remove();
             if (appTabHost.activeViewId === viewId && !restoringTabs) {
                 syncEmbeddedBounds(view);
                 await embeddedAppController.activate(app.action);
diff --git a/styles/ui-next.css b/styles/ui-next.css
index cb42192fc..cd4944711 100644
--- a/styles/ui-next.css
+++ b/styles/ui-next.css
@@ -424,6 +424,10 @@ html .next-ui-embedded-app-status {
     font-size: 14px;
 }
 
+html .next-ui-embedded-app-view[data-state="ready"] .next-ui-embedded-app-status {
+    display: none;
+}
+
 html .next-ui-embedded-app-status .vcp-ui-icon {
     animation: next-ui-embedded-spin var(--vcp-motion-duration-spinner) var(--vcp-motion-ease-linear) infinite;
 }