diff --git a/apps/desktop/e2e-budget.json b/apps/desktop/e2e-budget.json
index 8bd366b228..ec47c1ae8d 100644
--- a/apps/desktop/e2e-budget.json
+++ b/apps/desktop/e2e-budget.json
@@ -70,8 +70,8 @@
       "electron": "the perf budget is measured from CDP wheel input and the browser's own render skipping"
     },
     "workhub-layout.spec.ts": {
-      "tests": 2,
-      "electron": "WorkHub model configuration and attachment sending cross the Host boundary; native floating preserves macOS Dock visibility and pointer dragging verifies model-wheel scrolling and release snapping; a held-open Host Turn verifies immediate prompt visibility, durable transcript handoff and persistence after renderer reload"
+      "tests": 3,
+      "electron": "WorkHub model configuration and attachment sending cross the Host boundary; the Project New task action must dismiss the native dock owned by a separate WebContentsView; native floating preserves macOS Dock visibility and pointer dragging verifies model-wheel scrolling and release snapping; a held-open Host Turn verifies immediate prompt visibility, durable transcript handoff and persistence after renderer reload"
     },
     "workhub-reconstruction.spec.ts": {
       "tests": 1,
diff --git a/apps/desktop/e2e/workhub-layout.spec.ts b/apps/desktop/e2e/workhub-layout.spec.ts
index 48e45c0adb..e54a93faaa 100644
--- a/apps/desktop/e2e/workhub-layout.spec.ts
+++ b/apps/desktop/e2e/workhub-layout.spec.ts
@@ -399,3 +399,18 @@ test('WorkHub keeps the submitted prompt visible while its agent is still runnin
   await workhub.getByRole('button', { name: /发送|Send/, exact: true }).click();
   await expect(workhub.getByText('Fake backend received: Reply after renderer recovery')).toBeVisible();
 });
+
+test('project menu exits WorkHub before starting a new task', async ({ projectSidebarWindow: page }) => {
+  await page.keyboard.press('Escape');
+  await page.evaluate(() => window.maka.settings.updateClient({ workHub: { enabled: true } }));
+  await expect(page.locator('.workHubDock')).toBeVisible();
+
+  const sidebar = page.getByRole('navigation', { name: '任务列表' });
+  await sidebar.getByRole('radio', { name: '按项目', exact: true }).click();
+  await page.getByRole('button', { name: '示例项目 项目操作', exact: true }).click();
+  await page.getByRole('menuitem', { name: '新建任务', exact: true }).click();
+
+  await expect(page.locator('.workHubDock')).toBeHidden();
+  await expect(page.locator(COMPOSER_INPUT)).toBeFocused();
+  await expect(page.locator('[data-turn-id]')).toHaveCount(0);
+});
diff --git a/apps/desktop/src/renderer/features/session-navigation/ui/session-navigation-provider.tsx b/apps/desktop/src/renderer/features/session-navigation/ui/session-navigation-provider.tsx
index f9e0799b89..ccee20a31b 100644
--- a/apps/desktop/src/renderer/features/session-navigation/ui/session-navigation-provider.tsx
+++ b/apps/desktop/src/renderer/features/session-navigation/ui/session-navigation-provider.tsx
@@ -135,7 +135,10 @@ export function SessionNavigationProvider(props: SessionNavigationProviderProps)
     () =>
       hasProjectActions
         ? {
-            onNew: (projectId) => chromeRef.current.projectActions?.onNew(projectId),
+            onNew: (projectId) => {
+              chromeRef.current.onExitWorkHub();
+              return chromeRef.current.projectActions?.onNew(projectId);
+            },
             onRename: (projectId, name) =>
               chromeRef.current.projectActions?.onRename(projectId, name),
             onArchive: (projectId) => chromeRef.current.projectActions?.onArchive(projectId),