diff --git a/VERSION b/VERSION
index d24bae7..591b0f8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.140
+1.1.141
diff --git a/cmd/edgeguard-api/main.go b/cmd/edgeguard-api/main.go
index cdec34c..045cdea 100644
--- a/cmd/edgeguard-api/main.go
+++ b/cmd/edgeguard-api/main.go
@@ -60,7 +60,7 @@ import (
 	usersvc "git.netcell-it.de/projekte/edgeguard-native/internal/services/users"
 )
 
-var version = "1.1.140"
+var version = "1.1.141"
 
 func main() {
 	addr := os.Getenv("EDGEGUARD_API_ADDR")
diff --git a/cmd/edgeguard-ctl/main.go b/cmd/edgeguard-ctl/main.go
index fae04ca..80e21ca 100644
--- a/cmd/edgeguard-ctl/main.go
+++ b/cmd/edgeguard-ctl/main.go
@@ -11,7 +11,7 @@ import (
 	"git.netcell-it.de/projekte/edgeguard-native/internal/services/setup"
 )
 
-var version = "1.1.140"
+var version = "1.1.141"
 
 const usage = `edgeguard-ctl — EdgeGuard CLI
 
diff --git a/cmd/edgeguard-scheduler/main.go b/cmd/edgeguard-scheduler/main.go
index 933667b..cf51fed 100644
--- a/cmd/edgeguard-scheduler/main.go
+++ b/cmd/edgeguard-scheduler/main.go
@@ -41,7 +41,7 @@ import (
 	"git.netcell-it.de/projekte/edgeguard-native/internal/services/tlscerts"
 )
 
-var version = "1.1.140"
+var version = "1.1.141"
 
 const (
 	// renewTickInterval — how often we re-evaluate expiring certs.
diff --git a/management-ui/src/i18n/locales/de/common.json b/management-ui/src/i18n/locales/de/common.json
index 0514a9a..cbfd347 100644
--- a/management-ui/src/i18n/locales/de/common.json
+++ b/management-ui/src/i18n/locales/de/common.json
@@ -380,6 +380,8 @@
     "forceHttp1Hint": "Deaktiviert HTTP/2 (h2) auf der Backend-Verbindung — HAProxy handelt nur noch HTTP/1.1 aus. Nötig für Backends die kein h2 unterstützen (z. B. ältere nginx-Konfigurationen ohne h2-Modul, Legacy-Apps).",
     "servers": "Server",
     "noServers": "kein Server",
+    "noServersWarning": "Ein oder mehrere aktive Backends haben keine Server konfiguriert.",
+    "noServersWarningDesc": "HAProxy liefert für Traffic auf diese Backends 503. Backend öffnen (oranger Tag) und mindestens einen Server hinzufügen.",
     "nServers": "{{n}} Server",
     "serversIn": "Server in „{{name}}\"",
     "serverHintCreate": "Speichern legt nur den Pool an. Server kommen im nächsten Schritt — Pool öffnen → „Server hinzufügen\".",
@@ -415,6 +417,8 @@
     "editRule": "Regel bearbeiten",
     "domain": "Domain",
     "pathPrefix": "Pfad-Präfix",
+    "pathPrefixHint": "Muss mit / beginnen. HAProxy matcht als Präfix.",
+    "pathPrefixInvalid": "Pfad muss mit / beginnen und darf nur gültige URL-Zeichen enthalten",
     "backend": "Backend",
     "priority": "Priorität",
     "active": "Aktiv",
diff --git a/management-ui/src/i18n/locales/en/common.json b/management-ui/src/i18n/locales/en/common.json
index ae51209..b28cf68 100644
--- a/management-ui/src/i18n/locales/en/common.json
+++ b/management-ui/src/i18n/locales/en/common.json
@@ -380,6 +380,8 @@
     "forceHttp1Hint": "Disables HTTP/2 (h2) on the backend connection — HAProxy negotiates HTTP/1.1 only. Required for backends that don't support h2 (e.g. older nginx configs without the h2 module, legacy apps).",
     "servers": "Servers",
     "noServers": "no server",
+    "noServersWarning": "One or more active backends have no servers configured.",
+    "noServersWarningDesc": "HAProxy will return 503 for any traffic routed to these backends. Open the backend (orange tag) and add at least one server.",
     "nServers": "{{n}} servers",
     "serversIn": "Servers in “{{name}}”",
     "serverHintCreate": "Saving creates the pool only. Add servers in the next step — open the pool and click “Add server”.",
@@ -415,6 +417,8 @@
     "editRule": "Edit rule",
     "domain": "Domain",
     "pathPrefix": "Path prefix",
+    "pathPrefixHint": "Must start with /. HAProxy uses prefix matching.",
+    "pathPrefixInvalid": "Path must start with / and contain only valid URL characters",
     "backend": "Backend",
     "priority": "Priority",
     "active": "Active",
diff --git a/management-ui/src/pages/Backends/index.tsx b/management-ui/src/pages/Backends/index.tsx
index 76fd249..f2f9837 100644
--- a/management-ui/src/pages/Backends/index.tsx
+++ b/management-ui/src/pages/Backends/index.tsx
@@ -329,6 +329,15 @@ export default function BackendsPage() {
           </Tag>
         )}
       />
+      {serverCounts && (data ?? []).some(b => b.active && (serverCounts[b.id] ?? 0) === 0) && (
+        <Alert
+          type="warning"
+          showIcon
+          className="mb-12"
+          message={t('backends.noServersWarning')}
+          description={t('backends.noServersWarningDesc')}
+        />
+      )}
       <DataTable
         rowKey="id"
         loading={isLoading}
diff --git a/management-ui/src/pages/RoutingRules/index.tsx b/management-ui/src/pages/RoutingRules/index.tsx
index 185a621..cf8c19b 100644
--- a/management-ui/src/pages/RoutingRules/index.tsx
+++ b/management-ui/src/pages/RoutingRules/index.tsx
@@ -270,6 +270,7 @@ export default function RoutingRulesPage() {
         onCancel={() => { setEditing(null); setCreating(false) }}
         onOk={() => { void form.submit() }}
         confirmLoading={create.isPending || update.isPending}
+        destroyOnHidden
       >
         <Form
           form={form}
@@ -285,7 +286,15 @@ export default function RoutingRulesPage() {
               placeholder={t('routing.selectDomain')}
             />
           </Form.Item>
-          <Form.Item label={t('routing.pathPrefix')} name="path_prefix" rules={[{ required: true }]}>
+          <Form.Item
+            label={t('routing.pathPrefix')}
+            name="path_prefix"
+            extra={t('routing.pathPrefixHint')}
+            rules={[
+              { required: true },
+              { pattern: /^\/[a-zA-Z0-9\-._~!$&'()*+,;=:@/%]*$/, message: t('routing.pathPrefixInvalid') },
+            ]}
+          >
             <Input placeholder="/" />
           </Form.Item>
           <Form.Item label={t('routing.backend')} name="backend_id" rules={[{ required: true }]}>