diff --git a/nmapui/handlers/connections.py b/nmapui/handlers/connections.py
index 9b9f4fe..eaf0f73 100644
--- a/nmapui/handlers/connections.py
+++ b/nmapui/handlers/connections.py
@@ -129,6 +129,13 @@ def on_connect(auth=None):
         if auto_scan_config is not None:
             emit_to_client(new_sid, "auto_scan_status", build_auto_scan_status_payload(auto_scan_config))
 
+        # #237: ignore zombie jobs whose owner tab has disconnected.
+        if owner_sid and owner_sid not in getattr(broadcaster, "_connected_sids", set()):
+            _complete = getattr(job_registry, "complete", None)
+            if callable(_complete):
+                _complete(owner_sid, active_job_type or "scan", status="completed")
+            broadcaster.end_job(owner_sid, job_type=active_job_type or "scan")
+            job = None
         job = job_registry.get(owner_sid, active_job_type) if owner_sid else None
         is_scanning = bool(job and job.get("status") in ("running", "cancelling"))
         last_scan_target = source_state.get("last_scan_target") or ""
@@ -197,6 +204,14 @@ def on_get_initial_data():
         )
 
         job = job_registry.get(owner_sid, active_job_type) if owner_sid else None
+        # #237 follow-up: a job whose owner tab is gone is a zombie - it would
+        # otherwise disable scan buttons for every future page load.
+        if owner_sid and owner_sid not in getattr(broadcaster, "_connected_sids", set()):
+            job = None
+            _complete = getattr(job_registry, "complete", None)
+            if callable(_complete):
+                _complete(owner_sid, active_job_type or "scan", status="completed")
+            broadcaster.end_job(owner_sid, job_type=active_job_type or "scan")
         is_scanning = bool(job and job.get("status") in ("running", "cancelling"))
         last_scan_target = source_state.get("last_scan_target") or ""
         network_key = source_state.get("network_key") or {}
diff --git a/static/js/app_bootstrap.js b/static/js/app_bootstrap.js
index 2b785bb..8c5b56e 100644
--- a/static/js/app_bootstrap.js
+++ b/static/js/app_bootstrap.js
@@ -57,6 +57,14 @@ async function bootstrapApp() {
     }
     // Request the legacy sync snapshot now that all listeners are wired (#230 bridge).
     socket.emit('get_initial_data');
+    // Transport-level reconnect = new server session; closures hold the dead socket.
+    // Reload to rebuild everything against the live session (#237 follow-up).
+    if (socket.io) {
+        socket.io.on('reconnect', () => { location.reload(); });
+    }
+    if (typeof initializeScanButtonWiring === 'function') {
+        initializeScanButtonWiring(socket);
+    }
     if (typeof initializeDiscoveryUI === 'function') {
         initializeDiscoveryUI(socket);
     }
diff --git a/static/js/scan_runtime.js b/static/js/scan_runtime.js
index 3aeedcb..ec96075 100644
--- a/static/js/scan_runtime.js
+++ b/static/js/scan_runtime.js
@@ -697,7 +697,7 @@ function updateHostRow(data) {
     updateCVESummaries();
 }
 
-function initializeDiscoveryUI(socket) {
+function initializeScanButtonWiring(socket) {
     const startScanBtn = document.getElementById('start-scan-btn');
     const completeScanBtn = document.getElementById('generate-report-btn');
     const dragnetScanBtn = document.getElementById('dragnet-scan-btn');
diff --git a/templates/index.html b/templates/index.html
index 5c0f716..5076045 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -1650,6 +1650,13 @@ <h3 class="text-xl font-display italic text-emerald-900">Scan Complete!</h3>
             }
             // Request the legacy sync snapshot now that all listeners are wired (#230 bridge).
             socket.emit('get_initial_data');
+            // A transport-level reconnect creates a new server session; module
+            // closures still hold the dead socket, so events would vanish. Reload
+            // to rebuild everything against the live session (#237 follow-up).
+            socket.io.on('reconnect', () => { location.reload(); });
+            if (typeof initializeScanButtonWiring === 'function') {
+                initializeScanButtonWiring(socket);
+            }
             if (typeof initializeDiscoveryUI === 'function') {
                 initializeDiscoveryUI(socket);
             }