From fe43043e00466dec93cfa2099fe7561ef607359c Mon Sep 17 00:00:00 2001
From: John Maxwell <maxwellparc@gmail.com>
Date: Wed, 13 May 2026 08:59:51 -0700
Subject: [PATCH] Fix LT-22520: Crash when closing Find dialog in Grammar
 Sketch

---
 Src/xWorks/GeneratedHtmlViewer.cs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Src/xWorks/GeneratedHtmlViewer.cs b/Src/xWorks/GeneratedHtmlViewer.cs
index 2fa2324a13..c3c2f0e301 100644
--- a/Src/xWorks/GeneratedHtmlViewer.cs
+++ b/Src/xWorks/GeneratedHtmlViewer.cs
@@ -228,6 +228,11 @@ private void InitHtmlControl()
 
 		private void Find_Click(object sender, EventArgs e)
 		{
+			if (m_sHtmlFileName == InitialDocument)
+			{
+				// InitialDocument doesn't have the proper javascript for Find to work.
+				return;
+			}
 			findDlg = new FindDialog(m_htmlControl.Browser);
 			findDlg.FormClosing += new FormClosingEventHandler(FindDialog_FormClosing);
 			findDlg.Show(this);