From d78cdd1c8c013cb07e94978e6ee12f376817988b Mon Sep 17 00:00:00 2001
From: Jumar Macato <16554748+jmacato@users.noreply.github.com>
Date: Fri, 3 Apr 2026 16:19:17 +0800
Subject: [PATCH] Fix/linux atspi backend (#21072)

* Fix ATSPI SyncContext to UIThread

* Update Avalonia.DBus submodule to fix empty array serialization and error handling

* use public api and revert to instantiation.
---
 external/Avalonia.DBus                        | 2 +-
 src/Avalonia.FreeDesktop.AtSpi/AtSpiServer.cs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/external/Avalonia.DBus b/external/Avalonia.DBus
index f91a822c25..864a052828 160000
--- a/external/Avalonia.DBus
+++ b/external/Avalonia.DBus
@@ -1 +1 @@
-Subproject commit f91a822c258476f185e51112388775591e6ef9d6
+Subproject commit 864a05282841bf04006890f04d11d60d1a046aa9
diff --git a/src/Avalonia.FreeDesktop.AtSpi/AtSpiServer.cs b/src/Avalonia.FreeDesktop.AtSpi/AtSpiServer.cs
index 16d36eb590..06b9b7aa3f 100644
--- a/src/Avalonia.FreeDesktop.AtSpi/AtSpiServer.cs
+++ b/src/Avalonia.FreeDesktop.AtSpi/AtSpiServer.cs
@@ -61,7 +61,7 @@ namespace Avalonia.FreeDesktop.AtSpi
                 _isEmbedded = false;
             }
 
-            _syncContext = new AvaloniaSynchronizationContext(DispatcherPriority.Normal);
+            _syncContext = new AvaloniaSynchronizationContext(Dispatcher.UIThread, DispatcherPriority.Default);
 
             var address = await GetAccessibilityBusAddressAsync();