diff --git a/backend/src/Squidex.Domain.Apps.Entities.MongoDb/FullText/MongoDirectoryFactory.cs b/backend/src/Squidex.Domain.Apps.Entities.MongoDb/FullText/MongoDirectoryFactory.cs
index 0cd1725bb..adeb62ae3 100644
--- a/backend/src/Squidex.Domain.Apps.Entities.MongoDb/FullText/MongoDirectoryFactory.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities.MongoDb/FullText/MongoDirectoryFactory.cs
@@ -26,7 +26,7 @@ namespace Squidex.Domain.Apps.Entities.MongoDb.FullText
         {
             var folderName = schemaId.ToString();
 
-            var tempFolder = Path.Combine(Path.GetTempPath(), folderName);
+            var tempFolder = Path.Combine(Path.GetTempPath(), "Indices", folderName);
             var tempDirectory = new DirectoryInfo(tempFolder);
 
             return new MongoDirectory(bucket, folderName, tempDirectory);
diff --git a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/IndexHolder.cs b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/IndexHolder.cs
index 547dded4b..478c6c6fc 100644
--- a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/IndexHolder.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/IndexHolder.cs
@@ -95,7 +95,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
         {
             if (disposing)
             {
-                indexWriter.Dispose();
+                indexWriter?.Dispose();
             }
         }
 
diff --git a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextContent.cs b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextContent.cs
index c038d99e8..7b2d5f5a8 100644
--- a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextContent.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextContent.cs
@@ -12,13 +12,24 @@ using Squidex.Domain.Apps.Core.Contents;
 using Squidex.Infrastructure;
 using Squidex.Infrastructure.Json.Objects;
 
-#pragma warning disable ORL1001
-
 namespace Squidex.Domain.Apps.Entities.Contents.Text
 {
-    [Serializable]
-    public sealed class TextContent : Dictionary<string, string>
+    public sealed class TextContent
     {
+        public Dictionary<string, string> Texts { get; } = new Dictionary<string, string>();
+
+        public string this[string key]
+        {
+            get
+            {
+                return Texts.GetOrDefault(key) ?? string.Empty;
+            }
+            set
+            {
+                Texts[key] = value;
+            }
+        }
+
         public TextContent()
         {
         }
@@ -62,7 +73,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
 
             foreach (var kvp in languages)
             {
-                this[kvp.Key] = kvp.Value.ToString();
+                Texts[kvp.Key] = kvp.Value.ToString();
             }
         }
 
diff --git a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextIndexContent.cs b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextIndexContent.cs
index a10603e3c..ec1de40f6 100644
--- a/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextIndexContent.cs
+++ b/backend/src/Squidex.Domain.Apps.Entities/Contents/Text/TextIndexContent.cs
@@ -122,7 +122,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
         {
             var document = new Document();
 
-            foreach (var field in text)
+            foreach (var field in text.Texts)
             {
                 document.AddTextField(field.Key, field.Value, Field.Store.NO);
             }
diff --git a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Text/GrainTextIndexerTests.cs b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Text/GrainTextIndexerTests.cs
index 18d886d09..dce53c37b 100644
--- a/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Text/GrainTextIndexerTests.cs
+++ b/backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/Text/GrainTextIndexerTests.cs
@@ -54,7 +54,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
         {
             await sut.On(E(new ContentCreated()));
 
-            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Count == 0 && x.Id == contentId && x.OnlyDraft)))
+            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Texts.Count == 0 && x.Id == contentId && x.OnlyDraft)))
                 .MustHaveHappened();
         }
 
@@ -63,7 +63,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
         {
             await sut.On(E(new ContentUpdated()));
 
-            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Count == 0 && x.Id == contentId && !x.OnlyDraft)))
+            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Texts.Count == 0 && x.Id == contentId && !x.OnlyDraft)))
                 .MustHaveHappened();
         }
 
@@ -72,7 +72,7 @@ namespace Squidex.Domain.Apps.Entities.Contents.Text
         {
             await sut.On(E(new ContentUpdateProposed()));
 
-            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Count == 0 && x.Id == contentId && x.OnlyDraft)))
+            A.CallTo(() => grain.IndexAsync(A<Update>.That.Matches(x => x.Text.Texts.Count == 0 && x.Id == contentId && x.OnlyDraft)))
                 .MustHaveHappened();
         }
 
diff --git a/frontend/app/features/administration/pages/cluster/cluster-page.component.scss b/frontend/app/features/administration/pages/cluster/cluster-page.component.scss
index e4e8902fd..4ec84ebe0 100644
--- a/frontend/app/features/administration/pages/cluster/cluster-page.component.scss
+++ b/frontend/app/features/administration/pages/cluster/cluster-page.component.scss
@@ -3,6 +3,7 @@
 
 iframe {
     @include absolute(0, 0, 0, 0);
+    @include force-height(100%);
     @include force-width(100%);
     border: 0;
 }
\ No newline at end of file