Intermittent exception when creating a ListViewGroupAccessibleObject

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ListView/ListView.ListViewAccessibleObject.cs

@@ -313,7 +313,7 @@ internal IReadOnlyList<ListViewGroup> GetVisibleGroups()
                 IReadOnlyList<ListViewGroup> visibleGroups = GetVisibleGroups();
                 for (int i = 0; i < visibleGroups.Count; i++)
                 {
-                    if (visibleGroups[i].AccessibilityObject.Bounds.Contains(hitTestPoint))
+                    if (visibleGroups[i].AccessibilityObject?.Bounds.Contains(hitTestPoint) == true)
                     {
                         return visibleGroups[i].AccessibilityObject;
                     }

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ListView/ListViewGroup.ListViewGroupAccessibleObject.cs

@@ -17,17 +17,12 @@ internal sealed class ListViewGroupAccessibleObject : AccessibleObject
         private readonly ListViewGroup _owningGroup;
         private readonly bool _owningGroupIsDefault;
 
-        public ListViewGroupAccessibleObject(ListViewGroup owningGroup, bool owningGroupIsDefault)
+        public ListViewGroupAccessibleObject(ListViewGroup owningGroup, ListView listView, bool owningGroupIsDefault)
         {
             _owningGroup = owningGroup.OrThrowIfNull();
+            _owningListView = listView.OrThrowIfNull();
 
-            // Using item from group for getting of ListView is a workaround for https://github.com/dotnet/winforms/issues/4019
-            _owningListView = owningGroup.ListView
-                ?? (owningGroup.Items.Count > 0 && _owningGroup.Items[0].ListView is ListView listView
-                    ? listView
-                    : throw new InvalidOperationException(nameof(owningGroup.ListView)));
-
-            _owningListViewAccessibilityObject = _owningListView.AccessibilityObject as ListView.ListViewAccessibleObject
+            _owningListViewAccessibilityObject = _owningListView.AccessibilityObject as ListViewAccessibleObject
                 ?? throw new InvalidOperationException(nameof(_owningListView.AccessibilityObject));
 
             _owningGroupIsDefault = owningGroupIsDefault;

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ListView/ListViewGroup.cs

@@ -74,8 +74,26 @@ public ListViewGroup(string? header, HorizontalAlignment headerAlignment) : this
         _headerAlignment = headerAlignment;
     }
 
-    internal AccessibleObject AccessibilityObject
-        => _accessibilityObject ??= new ListViewGroupAccessibleObject(this, ListView?.Groups.Contains(this) == false);
+    internal AccessibleObject? AccessibilityObject
+    {
+        get
+        {
+            if (_accessibilityObject is not null)
+            {
+                return _accessibilityObject;
+            }
+
+            // Using item from group for getting of ListView is a workaround for https://github.com/dotnet/winforms/issues/4019
+            var listView = ListView;
+            listView ??= Items.Count > 0 ? Items[0].ListView : null;
+            if (listView is not null)
+            {
+                _accessibilityObject = new ListViewGroupAccessibleObject(this, listView, owningGroupIsDefault: !listView.Groups.Contains(this));
+            }
+
+            return _accessibilityObject;
+        }
+    }
 
     /// <summary>
     ///  The text displayed in the group header.

src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/AccessibleObjects/ListViewGroup.ListViewGroupAccessibleObjectTests.cs

@@ -1326,10 +1326,12 @@ public void ListViewGroupAccessibleObject_IsPatternSupported_ReturnFalse_ForColl
         };
 
         listView.Groups.Add(listGroup);
-        ListViewItem item = new("Test");
-        item.Group = listGroup;
+        ListViewItem item = new("Test")
+        {
+            Group = listGroup
+        };
         listView.Items.Add(item);
-        ListViewGroupAccessibleObject accessibleObject = new(listGroup, false);
+        ListViewGroupAccessibleObject accessibleObject = new(listGroup, listView, false);
 
         if (createHandle)
         {