From d74899a11624e008a608352f5a96d87bd305c0ff Mon Sep 17 00:00:00 2001
From: Daria Ermakova <darya.ermakova@onlyoffice.com>
Date: Wed, 10 Dec 2025 18:08:20 +0300
Subject: [PATCH] Fix bug 79005

---
 RtfFile/Format/RtfProperty.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/RtfFile/Format/RtfProperty.cpp b/RtfFile/Format/RtfProperty.cpp
index 85eb810cea..cbe266f97d 100644
--- a/RtfFile/Format/RtfProperty.cpp
+++ b/RtfFile/Format/RtfProperty.cpp
@@ -1038,7 +1038,13 @@ std::wstring RtfShading::RenderToOOX(RenderParameter oRenderParameter)
 	{
 		switch (m_eType)
 		{
-		case st_clshdrawnil:	sShading += L" w:val=\"nil\"";						break;
+        case st_clshdrawnil:
+        {
+            if (PROP_DEF != m_nBackColor)
+                sShading += L" w:val=\"clear\"";
+            else
+                sShading += L" w:val=\"nil\"";
+        }break;
 		case st_chbghoriz:		sShading += L" w:val=\"thinHorzStripehorzStripe\"";	break;
 		case st_chbgvert:		sShading += L" w:val=\"thinVertStripe\"";			break;
 		case st_chbgfdiag:		sShading += L" w:val=\"thinReverseDiagStripe\"";	break;