diff --git a/src/libslic3r/AppConfig.cpp b/src/libslic3r/AppConfig.cpp
index a5d0e24eac..e8a0c80a3d 100644
--- a/src/libslic3r/AppConfig.cpp
+++ b/src/libslic3r/AppConfig.cpp
@@ -86,8 +86,17 @@ std::string AppConfig::get_hms_host()
 
 bool AppConfig::get_stealth_mode()
 {
-    // always return true when user did not finish setup wizard yet
-    if (!get_bool("firstguide","finish")) {
+    // Before the setup wizard has been completed the user has not been asked whether the app may
+    // use the network, so default to no. Signing in to a cloud account IS that answer, though, and
+    // the latch must not survive it: a user who closes the wizard and logs in from the account menu
+    // — the workaround people share for the wizard never offering login — otherwise gets every
+    // cloud feature silently switched off. No post-login sync prompt, no user presets fetched, and
+    // "Sync Presets" greyed out with nothing to say why, because on_user_login_handle() returns
+    // early on stealth. Upstream #15239.
+    //
+    // This releases the pre-wizard DEFAULT only. An explicit Stealth mode setting still wins, so a
+    // user who deliberately turned it on stays offline whether or not they are signed in.
+    if (!m_cloud_logged_in && !get_bool("firstguide","finish")) {
         return true;
     }
     return get_bool("stealth_mode");
diff --git a/src/libslic3r/AppConfig.hpp b/src/libslic3r/AppConfig.hpp
index 2c83ebb488..adb30375e3 100644
--- a/src/libslic3r/AppConfig.hpp
+++ b/src/libslic3r/AppConfig.hpp
@@ -91,6 +91,9 @@ public:
 	std::string get_language_code();
 	std::string get_hms_host();
 	bool get_stealth_mode();
+	// Session state, not a setting: mirrors whether a cloud account is currently signed in, so
+	// get_stealth_mode() can tell "the user has not been asked yet" from "the user said no".
+	void set_cloud_logged_in(bool logged_in) { m_cloud_logged_in = logged_in; }
 	bool get_hide_login_side_panel();
 
 	// Clear and reset to defaults.
@@ -424,6 +427,9 @@ private:
 	Semver                                                      m_orig_version;
 	// Whether the existing version is before system profiles & configuration updating
 	bool                                                        m_legacy_datadir;
+	// A cloud account is signed in right now. Deliberately NOT persisted: it is mirrored from the
+	// network agent on login/logout, so a stale value cannot outlive the session that set it.
+	bool                                                        m_cloud_logged_in{false};
 
 	std::string                                                 m_loading_path;
 
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index db51bd9d8e..64f539db20 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -3834,6 +3834,10 @@ bool GUI_App::on_init_network(bool try_backup)
         std::string country_code = app_config->get_country_code();
         m_agent->set_country_code(country_code);
         m_agent->start();
+        // A session restored from a saved token fires no login event, so seed the flag here too —
+        // otherwise the pre-wizard stealth default would come back on the next launch for a user
+        // who is already signed in.
+        app_config->set_cloud_logged_in(m_agent->is_user_login(ORCA_CLOUD_PROVIDER));
         // Orca: disable Bambu telemetry up-front (before any login) so it never starts.
         check_track_enable();
     }
@@ -5003,6 +5007,7 @@ void GUI_App::request_user_logout(const std::string& provider/* = ORCA_CLOUD_PRO
 {
     if (m_agent && m_agent->is_user_login(provider)) {
         m_agent->user_logout(true, provider);
+        app_config->set_cloud_logged_in(m_agent->is_user_login(ORCA_CLOUD_PROVIDER));
 
         if (provider == get_printer_cloud_provider()) {
             m_agent->set_user_selected_machine("");
@@ -5588,6 +5593,12 @@ void GUI_App::on_update_machine_list(wxCommandEvent &evt)
 void GUI_App::on_user_login_handle(wxCommandEvent &evt)
 {
     if (!m_agent) { return; }
+    // Tell AppConfig a cloud account is signed in BEFORE asking about stealth: an unfinished setup
+    // wizard makes get_stealth_mode() report stealth by default, and without this the early return
+    // below would swallow the whole post-login flow — presets, plugins and the sync prompt — for
+    // anyone who closed the wizard and signed in afterwards. An explicit Stealth mode setting is
+    // unaffected and still returns here.
+    app_config->set_cloud_logged_in(m_agent->is_user_login(ORCA_CLOUD_PROVIDER));
     if (app_config->get_stealth_mode()) {
         BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ": stealth mode enabled, skipping cloud connection";
         return;
diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 8452efa437..70b57451fe 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -3402,14 +3402,22 @@ void MainFrame::init_menubar_as_editor()
                 info_dlg.ShowModal();
                 return;
             }
+            if (wxGetApp().app_config->get_stealth_mode()) {
+                MessageDialog info_dlg(this,
+                    _L("Stealth mode is on, so Orca Cloud syncing is switched off. "
+                       "Turn Stealth mode off in Preferences to sync your presets."),
+                    _L("Sync Presets"), wxOK | wxICON_INFORMATION);
+                info_dlg.ShowModal();
+                return;
+            }
             if (m_plater)
                 m_plater->get_notification_manager()->push_notification(
                     into_u8(_L("Syncing presets from cloud\u2026")));
             wxGetApp().restart_sync_user_preset();
         }, "", nullptr,
-        [this]() {
-            return wxGetApp().is_user_login() && !wxGetApp().app_config->get_stealth_mode();
-        }, this);
+        // Stays ENABLED whatever the cloud state: both refusals above name their reason, and a
+        // greyed-out item names none. A user who could not sync had no way to find out why.
+        []() { return true; }, this);
 
     top_menu->AppendSeparator();
     append_menu_item(
@@ -3539,14 +3547,22 @@ void MainFrame::init_menubar_as_editor()
                 info_dlg.ShowModal();
                 return;
             }
+            if (wxGetApp().app_config->get_stealth_mode()) {
+                MessageDialog info_dlg(this,
+                    _L("Stealth mode is on, so Orca Cloud syncing is switched off. "
+                       "Turn Stealth mode off in Preferences to sync your presets."),
+                    _L("Sync Presets"), wxOK | wxICON_INFORMATION);
+                info_dlg.ShowModal();
+                return;
+            }
             if (m_plater)
                 m_plater->get_notification_manager()->push_notification(
                     into_u8(_L("Syncing presets from cloud\u2026")));
             wxGetApp().restart_sync_user_preset();
         }, "", nullptr,
-        [this]() {
-            return wxGetApp().is_user_login() && !wxGetApp().app_config->get_stealth_mode();
-        }, this);
+        // Stays ENABLED whatever the cloud state: both refusals above name their reason, and a
+        // greyed-out item names none. A user who could not sync had no way to find out why.
+        []() { return true; }, this);
 
     fileMenu->AppendSeparator();
     append_menu_item(