From 9fe7a38b96c3632cd7e82ec38f6d6cb693a07390 Mon Sep 17 00:00:00 2001
From: neuecc <ils@neue.cc>
Date: Tue, 10 Sep 2024 01:27:40 +0900
Subject: [PATCH] new2

---
 src/ObservableCollections/SynchronizedViewList.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ObservableCollections/SynchronizedViewList.cs b/src/ObservableCollections/SynchronizedViewList.cs
index 418768f..7fe5634 100644
--- a/src/ObservableCollections/SynchronizedViewList.cs
+++ b/src/ObservableCollections/SynchronizedViewList.cs
@@ -64,7 +64,7 @@ internal class FiltableSynchronizedViewList<T, TView> : ISynchronizedViewList<TV
                 case NotifyCollectionChangedAction.Add: // Add or Insert
                     if (e.IsSingleItem)
                     {
-                        if (e.OldStartingIndex == -1)
+                        if (e.NewStartingIndex == -1)
                         {
                             // add operation
                             var index = listView.Count;