diff --git a/UPGRADE.md b/UPGRADE.md
index afc6c46..f55c4ca 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,5 +1,7 @@
 # Upgrade Notes
 
+## 5.0.6
+- [IMPROVEMENT] Try to determinate locale and site when inline renderer is active (mostly via `checkMissingRequiredEditable()`)
 ## 5.0.5
 - [BUGFIX] Fix exception handler decoration
 ## 5.0.4
diff --git a/config/services/route.yaml b/config/services/route.yaml
index 393dcb7..0aa4b5a 100644
--- a/config/services/route.yaml
+++ b/config/services/route.yaml
@@ -29,5 +29,9 @@ services:
             - { name: i18n.modifier.route_item }
 
     I18nBundle\Modifier\RouteItem\Type\PimcoreExportDataAwareModifier:
+        tags:
+            - { name: i18n.modifier.route_item }
+
+    I18nBundle\Modifier\RouteItem\Type\PimcoreInlineRendererAwareModifier:
         tags:
             - { name: i18n.modifier.route_item }
\ No newline at end of file
diff --git a/src/Modifier/RouteItem/Type/PimcoreExportDataAwareModifier.php b/src/Modifier/RouteItem/Type/PimcoreExportDataAwareModifier.php
index 13a6f96..3ae9937 100644
--- a/src/Modifier/RouteItem/Type/PimcoreExportDataAwareModifier.php
+++ b/src/Modifier/RouteItem/Type/PimcoreExportDataAwareModifier.php
@@ -3,7 +3,6 @@
 namespace I18nBundle\Modifier\RouteItem\Type;
 
 use I18nBundle\Model\RouteItem\RouteItemInterface;
-use Pimcore\Http\RequestHelper;
 use Pimcore\Model\Document;
 use Pimcore\Model\Site;
 use Pimcore\Tool\Frontend;
@@ -17,28 +16,18 @@ class PimcoreExportDataAwareModifier implements RouteItemModifierInterface
         'pimcore_bundle_xliff_translation_xliffexport'
     ];
 
-    public function __construct(
-        protected RequestStack $requestStack,
-        protected RequestHelper $requestHelper
-    ) {
+    public function __construct(protected RequestStack $requestStack)
+    {
     }
 
     public function supportParameters(string $type, RouteItemInterface $routeItem, array $parameters, array $context): bool
     {
-        if (!$this->requestStack->getMainRequest() instanceof Request) {
-            return false;
-        }
-
-        return in_array($this->requestStack->getMainRequest()->attributes->get('_route'), self::EXPORT_AWARE_ROUTES, true);
+        return $this->isValidRequest();
     }
 
     public function supportRequest(string $type, RouteItemInterface $routeItem, Request $request, array $context): bool
     {
-        if (!$this->requestStack->getMainRequest() instanceof Request) {
-            return false;
-        }
-
-        return in_array($this->requestStack->getMainRequest()->attributes->get('_route'), self::EXPORT_AWARE_ROUTES, true);
+        return $this->isValidRequest();
     }
 
     public function modifyByParameters(RouteItemInterface $routeItem, array $parameters, array $context): void
@@ -93,4 +82,13 @@ protected function modify(RouteItemInterface $routeItem, Request $request): void
             $routeItem->getRouteParametersBag()->set('_locale', $element->getProperty('language'));
         }
     }
+
+    private function isValidRequest(): bool
+    {
+        if (!$this->requestStack->getMainRequest() instanceof Request) {
+            return false;
+        }
+
+        return in_array($this->requestStack->getMainRequest()->attributes->get('_route'), self::EXPORT_AWARE_ROUTES, true);
+    }
 }
diff --git a/src/Modifier/RouteItem/Type/PimcoreInlineRendererAwareModifier.php b/src/Modifier/RouteItem/Type/PimcoreInlineRendererAwareModifier.php
new file mode 100644
index 0000000..c470ffc
--- /dev/null
+++ b/src/Modifier/RouteItem/Type/PimcoreInlineRendererAwareModifier.php
@@ -0,0 +1,98 @@
+<?php
+
+namespace I18nBundle\Modifier\RouteItem\Type;
+
+use I18nBundle\Model\RouteItem\RouteItemInterface;
+use Pimcore\Model\Document;
+use Pimcore\Model\Site;
+use Pimcore\Tool\Frontend;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+class PimcoreInlineRendererAwareModifier implements RouteItemModifierInterface
+{
+    private const EDIT_AWARE_ROUTES = [
+        'pimcore_admin_document_document_add',
+        'pimcore_admin_document_page_save'
+    ];
+
+    public function __construct(protected RequestStack $requestStack)
+    {
+    }
+
+    public function supportParameters(string $type, RouteItemInterface $routeItem, array $parameters, array $context): bool
+    {
+        return $this->isValidRequest();
+    }
+
+    public function supportRequest(string $type, RouteItemInterface $routeItem, Request $request, array $context): bool
+    {
+        return $this->isValidRequest();
+    }
+
+    public function modifyByParameters(RouteItemInterface $routeItem, array $parameters, array $context): void
+    {
+        $this->modify($routeItem, $this->requestStack->getMainRequest());
+    }
+
+    public function modifyByRequest(RouteItemInterface $routeItem, Request $request, array $context): void
+    {
+        $this->modify($routeItem, $request);
+    }
+
+    protected function modify(RouteItemInterface $routeItem, Request $request): void
+    {
+        $document = $this->determinateDocumentByRoute($request);
+
+        $hasSiteContext = $routeItem->getRouteContextBag()->has('site') && $routeItem->getRouteContextBag()->get('site') !== null;
+        $hasLocaleParameter = $routeItem->getRouteParametersBag()->has('_locale');
+
+        if (!$document instanceof Document) {
+            return;
+        }
+
+        if (!$hasSiteContext) {
+            $site = Frontend::getSiteForDocument($document);
+            if ($site instanceof Site) {
+                $routeItem->getRouteContextBag()->set('site', $site);
+            }
+        }
+
+        if (!$hasLocaleParameter && !empty($document->getProperty('language'))) {
+            $routeItem->getRouteParametersBag()->set('_locale', $document->getProperty('language'));
+        }
+    }
+
+    private function determinateDocumentByRoute(Request $request): ?Document
+    {
+        if (
+            $request->attributes->get('_route') === 'pimcore_admin_document_document_add' &&
+            $request->request->get('elementType') === 'document' &&
+            !empty($request->request->get('parentId'))
+        ) {
+            return Document::getById($request->request->get('parentId'));
+        }
+
+        if (
+            $request->attributes->get('_route') === 'pimcore_admin_document_page_save' &&
+            !empty($request->request->get('id'))
+        ) {
+            return Document::getById($request->request->get('id'));
+        }
+
+        return null;
+    }
+
+    private function isValidRequest(): bool
+    {
+        if (!$this->requestStack->getMainRequest() instanceof Request) {
+            return false;
+        }
+
+        return in_array(
+            $this->requestStack->getMainRequest()->attributes->get('_route'),
+            self::EDIT_AWARE_ROUTES,
+            true
+        );
+    }
+}