Search and delete a message creates a empty message row

I am not sure if this is an issue in general but if you would like to recreate the issue below are the steps
1. Search for some text and ensure you get some mails that match the searh criteria
2. Delete the email (press Del key)
3. Press Ctrl+Z to undo or click undo, the mail shows empty

I presume it has been moved to Trash and is taking time to be moved back to Inbox or Folder. Not sure exactly what is happening.

But , this is not great user experience.