From cd34b624b398c7f272a56a5e575700a5d2751e0a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=81=8F=E5=8F=B3?= <afc163@gmail.com>
Date: Thu, 23 Apr 2020 11:17:21 +0800
Subject: [PATCH] :bug: Fix Menu behavior when hover gap (#23511)

close #13955
---
 components/menu/style/index.less | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/components/menu/style/index.less b/components/menu/style/index.less
index 883d8c1d7e..5cabeaad76 100644
--- a/components/menu/style/index.less
+++ b/components/menu/style/index.less
@@ -210,17 +210,26 @@
       z-index: @zindex-dropdown;
       border-radius: @border-radius-base;
 
+      // https://github.com/ant-design/ant-design/issues/13955
       &::before {
         position: absolute;
         top: -7px;
         right: 0;
         bottom: 0;
         left: 0;
+        width: 100%;
+        height: 100%;
         opacity: 0.0001;
         content: ' ';
       }
     }
 
+    // https://github.com/ant-design/ant-design/issues/13955
+    &-placement-rightTop::before {
+      top: 0;
+      left: -7px;
+    }
+
     > .@{menu-prefix-cls} {
       background-color: @menu-bg;
       border-radius: @border-radius-base;