From cdccf7d33bd09df0ded5be34407ddf3e1bfb80be Mon Sep 17 00:00:00 2001
From: Hendrik Peilke <143817985+hendrikpeilke@users.noreply.github.com>
Date: Wed, 20 Nov 2024 11:09:47 +0100
Subject: [PATCH] [DataGrid] Fix right column group header border with
 virtualization (#15470)

Co-authored-by: Kenan Yusuf <kenan.m.yusuf@gmail.com>
---
 .../src/hooks/features/columnHeaders/useGridColumnHeaders.tsx   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/x-data-grid/src/hooks/features/columnHeaders/useGridColumnHeaders.tsx b/packages/x-data-grid/src/hooks/features/columnHeaders/useGridColumnHeaders.tsx
index ee5325a7ad5b..d72882be1754 100644
--- a/packages/x-data-grid/src/hooks/features/columnHeaders/useGridColumnHeaders.tsx
+++ b/packages/x-data-grid/src/hooks/features/columnHeaders/useGridColumnHeaders.tsx
@@ -464,7 +464,7 @@ export const useGridColumnHeaders = (props: UseGridColumnHeadersProps) => {
           pinnedPosition={pinnedPosition}
           style={style}
           indexInSection={indexInSection}
-          sectionLength={rowStructure.length}
+          sectionLength={visibleColumnGroupHeader.length}
           gridHasFiller={gridHasFiller}
         />
       );