diff --git a/routes/bluetooth_v2.py b/routes/bluetooth_v2.py
index d1fd306..8878539 100644
--- a/routes/bluetooth_v2.py
+++ b/routes/bluetooth_v2.py
@@ -261,7 +261,7 @@ def start_scan():
     # Check if already scanning
     if scanner.is_scanning:
         return jsonify({
-            'status': 'already_running',
+            'status': 'already_scanning',
             'scan_status': scanner.get_status().to_dict()
         })
 
diff --git a/static/js/modes/bluetooth.js b/static/js/modes/bluetooth.js
index f432e98..a7b62f1 100644
--- a/static/js/modes/bluetooth.js
+++ b/static/js/modes/bluetooth.js
@@ -1784,6 +1784,13 @@ const BluetoothMode = (function() {
      */
     function destroy() {
         stopEventStream();
+        devices.clear();
+        pendingDeviceIds.clear();
+        if (deviceContainer) {
+            deviceContainer.innerHTML = '';
+        }
+        const countEl = document.getElementById('btDeviceListCount');
+        if (countEl) countEl.textContent = '0';
     }
 })();
 
diff --git a/templates/index.html b/templates/index.html
index 92a459a..adce6a3 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -4296,6 +4296,10 @@
             const sensorTimelineContainer = document.getElementById('sensorTimelineContainer');
             if (pagerTimelineContainer) pagerTimelineContainer.style.display = mode === 'pager' ? 'block' : 'none';
             if (sensorTimelineContainer) sensorTimelineContainer.style.display = mode === 'sensor' ? 'block' : 'none';
+            const pagerScopePanel = document.getElementById('pagerScopePanel');
+            if (pagerScopePanel && mode !== 'pager') pagerScopePanel.style.display = 'none';
+            const sensorScopePanel = document.getElementById('sensorScopePanel');
+            if (sensorScopePanel && mode !== 'sensor') sensorScopePanel.style.display = 'none';
             const morseScopePanel = document.getElementById('morseScopePanel');
             const morseOutputPanel = document.getElementById('morseOutputPanel');
             if (morseScopePanel && mode !== 'morse') morseScopePanel.style.display = 'none';