From f90444b6765afd03ddb947bd38bd3cb1a161a3f7 Mon Sep 17 00:00:00 2001
From: dif-sam <41672086+dif-sam@users.noreply.github.com>
Date: Thu, 25 Sep 2025 17:15:11 +0400
Subject: [PATCH] Fixing a memory leak when closing a window (#19699)

Added unsubscription from the X11Globals.WindowActivationTrackingModeChanged event in the Dispose method of the WindowActivationTrackingHelper class
---
 src/Avalonia.X11/ActivityTrackingHelper.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.X11/ActivityTrackingHelper.cs b/src/Avalonia.X11/ActivityTrackingHelper.cs
index a3bfca5e90..846802d123 100644
--- a/src/Avalonia.X11/ActivityTrackingHelper.cs
+++ b/src/Avalonia.X11/ActivityTrackingHelper.cs
@@ -81,6 +81,7 @@ internal class WindowActivationTrackingHelper : IDisposable
     public void Dispose()
     {
         _platform.Globals.NetActiveWindowPropertyChanged -= OnNetActiveWindowChanged;
+        _platform.Globals.WindowActivationTrackingModeChanged -= OnWindowActivationTrackingModeChanged;
     }
 
     public void OnNetWmStateChanged(IntPtr[] atoms)
@@ -88,4 +89,4 @@ internal class WindowActivationTrackingHelper : IDisposable
         if (Mode == X11Globals.WindowActivationTrackingMode._NET_WM_STATE_FOCUSED)
             SetActive(atoms.Contains(_platform.Info.Atoms._NET_WM_STATE_FOCUSED));
     }
-}
\ No newline at end of file
+}