From 78ee6716077c44f46fd3825ed816f88d42fe2cee Mon Sep 17 00:00:00 2001
From: GoaLitiuM <goalitium@kapsi.fi>
Date: Sat, 15 May 2021 13:38:42 +0300
Subject: [PATCH] Fix out of bound access to RichTextBoxBase internal buffer

---
 Source/Engine/UI/GUI/Common/RichTextBoxBase.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs b/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
index 1a57061e1..0dcfdd797 100644
--- a/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
+++ b/Source/Engine/UI/GUI/Common/RichTextBoxBase.cs
@@ -254,7 +254,7 @@ namespace FlaxEngine.GUI
                     break;
                 }
             }
-            var endTextBlock = Mathf.Min(firstTextBlock + 1, textBlocks.Length);
+            var endTextBlock = Mathf.Min(firstTextBlock + 1, _textBlocks.Count);
             for (int i = _textBlocks.Count - 1; i > firstTextBlock; i--)
             {
                 ref TextBlock textBlock = ref textBlocks[i];