From 36f878b02ae2610ca070afbc73ca29e6335889f5 Mon Sep 17 00:00:00 2001
From: Tako <tako0qq@gmail.com>
Date: Mon, 14 Mar 2022 15:38:47 +0200
Subject: [PATCH] Fix "ContextMenu ignores styles on first open"

---
 src/Avalonia.Controls/ContextMenu.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.Controls/ContextMenu.cs b/src/Avalonia.Controls/ContextMenu.cs
index 7a8438f1c3..bc5195ff6c 100644
--- a/src/Avalonia.Controls/ContextMenu.cs
+++ b/src/Avalonia.Controls/ContextMenu.cs
@@ -351,6 +351,11 @@ namespace Avalonia.Controls
                 ? PlacementMode.Bottom
                 : PlacementMode;
 
+            //Position of the line below is really important. 
+            //All styles are being applied only when control has logical parent.
+            //Line below will add ContextMenu as child to the Popup and this will trigger styles and they would be applied.
+            //If you will move line below somewhere else it may cause that ContextMenu will behave differently from what you are expecting.
+            _popup.Child = this;
             _popup.PlacementTarget = placementTarget;
             _popup.HorizontalOffset = HorizontalOffset;
             _popup.VerticalOffset = VerticalOffset;
@@ -359,7 +364,6 @@ namespace Avalonia.Controls
             _popup.PlacementGravity = PlacementGravity;
             _popup.PlacementRect = PlacementRect;
             _popup.WindowManagerAddShadowHint = WindowManagerAddShadowHint;
-            _popup.Child = this;
             IsOpen = true;
             _popup.IsOpen = true;