From 0f85a4603d094aa72727b8ac84b35ea5eab8f376 Mon Sep 17 00:00:00 2001
From: Max Katz <maxkatz6@outlook.com>
Date: Wed, 30 Aug 2023 19:18:03 -0700
Subject: [PATCH] Make WindowNotificationManager(TopLevel) ctor nullable as it
 was before

---
 .../Notifications/WindowNotificationManager.cs             | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs b/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
index cb7ade44b3..6d9a030ead 100644
--- a/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
+++ b/src/Avalonia.Controls/Notifications/WindowNotificationManager.cs
@@ -54,9 +54,12 @@ namespace Avalonia.Controls.Notifications
         /// Initializes a new instance of the <see cref="WindowNotificationManager"/> class.
         /// </summary>
         /// <param name="host">The TopLevel that will host the control.</param>
-        public WindowNotificationManager(TopLevel host) : this()
+        public WindowNotificationManager(TopLevel? host) : this()
         {
-            InstallFromTopLevel(host);
+            if (host is not null)
+            {
+                InstallFromTopLevel(host);
+            }
         }
 
         /// <summary>