• .NET Core Version: 5.0
• Have you experienced this same bug with .NET Framework?: Yes

Problem description:

• TreeNode has no keyboard tooltip when pressing the up/down arrow or Tab button to navigate to a TreeNode which got the keyboard focus

Expected behavior:

• TreeNode has a keyboard tooltip

Minimal repro:

1. Create .Net Core 5.0 app
2. Add a TreeView to the app
3. Add nodes to the TreeView
4. Set tooltips for TreeNodes
5. Allow showing tooltips for nodes
6. Run the app and try to get a node tooltip using a keyboard navigation