ListViewSubItem not shown in Inspector tree when ListViewItem belongs to group

[SergeySmirnov-Akvelon]

.NET Core Version:

• 5.0.200-preview.20614.14

Have you experienced this same bug with .NET Framework?:

• No. It is regression from ListView control does not support UIA accessibility #3223

Minimal repro:

1. Create application with ListView.
2. Set View.Tile for ListView.
3. Add couple ColumnHeaders to ListView.
4. Add ListViewGroup to ListView.
5. Add ListViewItem with ListViewSubItem to ListView.
6. Select ListViewGroup as Group of the ListViewItem.
7. Or use attached project
8. Run application.
9. Run Inpsector.
10. Select ListViewItem in Inspector.
11. Try to expand ListViewItem

Actual behavior:
ListViewItem is empty.

Expected behavior:
ListViewItem should contains ListViewSubItem

Note
I think this problem is produced due to strange checking of the _owningGroup in this condition

[SergeySmirnov-Akvelon]

Fixed in scope of #4677

[Jessie-Zhang01]

Verified this issue with .Net SDK 6.0.100-preview.4.21201.21, this issue is fixed. ListViewItem contains ListViewSubItem.