From a62bdcb4d2544ad585faabf8c6d0999f3a696252 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=98=93=E8=89=AF?= <1204183885@qq.com>
Date: Wed, 27 Aug 2025 08:46:47 +0000
Subject: [PATCH] Fix to #263546, for submenu of treeView view/item/context
 z-index issue - ensure submenu appears above other elements

---
 src/vs/base/browser/ui/menu/menu.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/vs/base/browser/ui/menu/menu.ts b/src/vs/base/browser/ui/menu/menu.ts
index eb6814c42f448..88f36a2af9e05 100644
--- a/src/vs/base/browser/ui/menu/menu.ts
+++ b/src/vs/base/browser/ui/menu/menu.ts
@@ -905,6 +905,8 @@ class SubmenuMenuActionViewItem extends BaseMenuActionViewItem {
 			this.submenuContainer.style.position = 'fixed';
 			this.submenuContainer.style.top = '0';
 			this.submenuContainer.style.left = '0';
+			// Fix to #263546, for submenu of treeView view/item/context z-index issue - ensure submenu appears above other elements
+			this.submenuContainer.style.zIndex = '1';
 
 			this.parentData.submenu = new Menu(this.submenuContainer, this.submenuActions.length ? this.submenuActions : [new EmptySubmenuAction()], this.submenuOptions, this.menuStyle);