diff --git a/Classes/Aspects/AugmentationAspect.php b/Classes/Aspects/AugmentationAspect.php
index 1138d150de..c29f45d82d 100644
--- a/Classes/Aspects/AugmentationAspect.php
+++ b/Classes/Aspects/AugmentationAspect.php
@@ -145,6 +145,10 @@ public function editableElementAugmentation(JoinPointInterface $joinPoint)
             return $content;
         }
 
+        if ($this->nodeAuthorizationService->isGrantedToEditNode($node) === false) {
+            return $content;
+        }
+
         $content = $joinPoint->getAdviceChain()->proceed($joinPoint);
 
         $attributes = [
@@ -166,6 +170,6 @@ protected function needsMetadata(NodeInterface $node, $renderCurrentDocumentMeta
         /** @var $contentContext ContentContext */
         $contentContext = $node->getContext();
 
-        return ($contentContext->isInBackend() === true && ($renderCurrentDocumentMetadata === true || $this->nodeAuthorizationService->isGrantedToEditNode($node) === true));
+        return $contentContext->isInBackend() === true || $renderCurrentDocumentMetadata === true;
     }
 }
diff --git a/Classes/Controller/BackendServiceController.php b/Classes/Controller/BackendServiceController.php
index 54dfa87b20..cae2de946d 100644
--- a/Classes/Controller/BackendServiceController.php
+++ b/Classes/Controller/BackendServiceController.php
@@ -189,11 +189,18 @@ protected function updateWorkspaceInfo(string $documentNodeContextPath): void
     {
         $updateWorkspaceInfo = new UpdateWorkspaceInfo();
         $documentNode = $this->nodeService->getNodeFromContextPath($documentNodeContextPath, null, null, true);
-        $updateWorkspaceInfo->setWorkspace(
-            $documentNode->getContext()->getWorkspace()
-        );
+        if ($documentNode === null) {
+            $error = new Error();
+            $error->setMessage(sprintf('Could not find node for document node context path "%s"', $documentNodeContextPath));
+
+            $this->feedbackCollection->add($error);
+        } else {
+            $updateWorkspaceInfo->setWorkspace(
+                $documentNode->getContext()->getWorkspace()
+            );
 
-        $this->feedbackCollection->add($updateWorkspaceInfo);
+            $this->feedbackCollection->add($updateWorkspaceInfo);
+        }
     }
 
     /**
@@ -237,6 +244,14 @@ public function publishAction(array $nodeContextPaths, string $targetWorkspaceNa
 
             foreach ($nodeContextPaths as $contextPath) {
                 $node = $this->nodeService->getNodeFromContextPath($contextPath, null, null, true);
+                if ($node === null) {
+                    $error = new Info();
+                    $error->setMessage(sprintf('Could not find node for context path "%s"', $contextPath));
+
+                    $this->feedbackCollection->add($error);
+
+                    continue;
+                }
                 $this->publishingService->publishNode($node, $targetWorkspace);
 
                 if ($node->getNodeType()->isAggregate()) {
diff --git a/packages/neos-ui-guest-frame/src/InlineUI/NodeToolbar/Buttons/PasteClipBoardNode/index.js b/packages/neos-ui-guest-frame/src/InlineUI/NodeToolbar/Buttons/PasteClipBoardNode/index.js
index 79f255a60a..fecf882255 100644
--- a/packages/neos-ui-guest-frame/src/InlineUI/NodeToolbar/Buttons/PasteClipBoardNode/index.js
+++ b/packages/neos-ui-guest-frame/src/InlineUI/NodeToolbar/Buttons/PasteClipBoardNode/index.js
@@ -15,7 +15,7 @@ import {selectors, actions} from '@neos-project/neos-ui-redux-store';
 
     return (state, {contextPath}) => {
         const clipboardNodesContextPaths = selectors.CR.Nodes.clipboardNodesContextPathsSelector(state);
-        const canBePasted = (clipboardNodesContextPaths.every(clipboardNodeContextPath => {
+        const canBePasted = Boolean(clipboardNodesContextPaths.length && clipboardNodesContextPaths.every(clipboardNodeContextPath => {
             return canBePastedSelector(state, {
                 subject: clipboardNodeContextPath,
                 reference: contextPath