diff --git a/packages/app/e2e/new-workspace.spec.ts b/packages/app/e2e/new-workspace.spec.ts
index db6010842..d760b07ec 100644
--- a/packages/app/e2e/new-workspace.spec.ts
+++ b/packages/app/e2e/new-workspace.spec.ts
@@ -12,6 +12,7 @@ import {
 } from "./helpers/new-workspace";
 import { createTempGitRepo } from "./helpers/workspace";
 import {
+  expectSidebarWorkspaceSelected,
   expectWorkspaceHeader,
   switchWorkspaceViaSidebar,
   waitForSidebarHydration,
@@ -101,6 +102,87 @@ test.describe("New workspace flow", () => {
     }
   });
 
+  test("same-project workspaces switch content without requiring refresh", async ({ page }) => {
+    const serverId = process.env.E2E_SERVER_ID;
+    if (!serverId) {
+      throw new Error("E2E_SERVER_ID is not set.");
+    }
+
+    const repo = await createTempGitRepo("workspace-nav-same-project-");
+
+    try {
+      const rootWorkspace = await openProjectViaDaemon(client, repo.path);
+      const worktreeWorkspace = await createWorktreeViaDaemon(client, {
+        cwd: repo.path,
+        slug: `nav-${Date.now()}`,
+      });
+      localWorkspaceIds.add(rootWorkspace.workspaceId);
+      createdWorktreeIds.add(worktreeWorkspace.workspaceId);
+
+      await gotoAppShell(page);
+      await waitForSidebarHydration(page);
+
+      await switchWorkspaceViaSidebar({
+        page,
+        serverId,
+        targetWorkspacePath: rootWorkspace.workspaceId,
+      });
+      await expectWorkspaceHeader(page, {
+        title: rootWorkspace.workspaceName,
+        subtitle: rootWorkspace.projectDisplayName,
+      });
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId,
+        workspaceId: rootWorkspace.workspaceId,
+      });
+
+      await switchWorkspaceViaSidebar({
+        page,
+        serverId,
+        targetWorkspacePath: worktreeWorkspace.workspaceId,
+      });
+      await expectWorkspaceHeader(page, {
+        title: worktreeWorkspace.workspaceName,
+        subtitle: worktreeWorkspace.projectDisplayName,
+      });
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId,
+        workspaceId: worktreeWorkspace.workspaceId,
+      });
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId,
+        workspaceId: rootWorkspace.workspaceId,
+        selected: false,
+      });
+
+      await switchWorkspaceViaSidebar({
+        page,
+        serverId,
+        targetWorkspacePath: rootWorkspace.workspaceId,
+      });
+      await expectWorkspaceHeader(page, {
+        title: rootWorkspace.workspaceName,
+        subtitle: rootWorkspace.projectDisplayName,
+      });
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId,
+        workspaceId: rootWorkspace.workspaceId,
+      });
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId,
+        workspaceId: worktreeWorkspace.workspaceId,
+        selected: false,
+      });
+    } finally {
+      await repo.cleanup();
+    }
+  });
+
   test("clicking new workspace redirects, renders header, shows sidebar row, and keeps one draft tab", async ({
     page,
   }) => {
diff --git a/packages/app/src/app/_layout.tsx b/packages/app/src/app/_layout.tsx
index 66c4a1d7f..c212b7e87 100644
--- a/packages/app/src/app/_layout.tsx
+++ b/packages/app/src/app/_layout.tsx
@@ -811,17 +811,7 @@ function RootStack() {
         getId={({ params }) => {
           const serverId = getRouteParamValue(params?.serverId);
           const workspaceId = getRouteParamValue(params?.workspaceId);
-          const openIntent = getRouteParamValue(
-            params && typeof params === "object" && "open" in params
-              ? (params as { open?: string | string[] }).open
-              : undefined,
-          );
-          if (!serverId || !workspaceId) {
-            return undefined;
-          }
-          return openIntent
-            ? `${serverId}:${workspaceId}:open:${openIntent}`
-            : `${serverId}:${workspaceId}`;
+          return serverId && workspaceId ? `${serverId}:${workspaceId}` : undefined;
         }}
       />
       <Stack.Screen name="h/[serverId]/agent/[agentId]" options={{ gestureEnabled: false }} />
diff --git a/packages/app/src/app/h/[serverId]/workspace/[workspaceId]/_layout.tsx b/packages/app/src/app/h/[serverId]/workspace/[workspaceId]/_layout.tsx
index 336e2bf38..33a98e734 100644
--- a/packages/app/src/app/h/[serverId]/workspace/[workspaceId]/_layout.tsx
+++ b/packages/app/src/app/h/[serverId]/workspace/[workspaceId]/_layout.tsx
@@ -3,7 +3,6 @@ import { useIsFocused, useNavigation } from "@react-navigation/native";
 import {
   useGlobalSearchParams,
   useLocalSearchParams,
-  usePathname,
   useRouter,
   useRootNavigationState,
 } from "expo-router";
@@ -13,7 +12,6 @@ import { WorkspaceScreen } from "@/screens/workspace/workspace-screen";
 import {
   buildHostWorkspaceRoute,
   decodeWorkspaceIdFromPathSegment,
-  parseHostWorkspaceRouteFromPathname,
   parseWorkspaceOpenIntent,
   type WorkspaceOpenIntent,
 } from "@/utils/host-routes";
@@ -85,7 +83,6 @@ function HostWorkspaceLayoutContent() {
   const rootNavigationState = useRootNavigationState();
   const consumedIntentRef = useRef<string | null>(null);
   const [intentConsumed, setIntentConsumed] = useState(false);
-  const pathname = usePathname();
   const params = useLocalSearchParams<{
     serverId?: string | string[];
     workspaceId?: string | string[];
@@ -93,9 +90,11 @@ function HostWorkspaceLayoutContent() {
   const globalParams = useGlobalSearchParams<{
     open?: string | string[];
   }>();
-  const parsedWorkspaceRoute = parseHostWorkspaceRouteFromPathname(pathname);
-  const serverId = parsedWorkspaceRoute?.serverId ?? "";
-  const workspaceId = parsedWorkspaceRoute?.workspaceId ?? "";
+  const serverId = getParamValue(params.serverId);
+  const workspaceValue = getParamValue(params.workspaceId);
+  const workspaceId = workspaceValue
+    ? (decodeWorkspaceIdFromPathSegment(workspaceValue) ?? "")
+    : "";
   const openValue = getParamValue(globalParams.open);
 
   useEffect(() => {