I posted the URL 'https://www.youtube.com/watch?v=KvnhB_OXIeM https://www.youtube.com/watch?v=KvnhB_OXIeM', but it changes back to 'https://www.youtube.com/shor

I posted the URL 'https://www.youtube.com/watch?v=KvnhB_OXIeM https://www.youtube.com/watch?v=KvnhB_OXIeM', but it changes back to 'https://www.youtube.com/shorts/KvnhB_OXIeM https://www.youtube.com/shorts/KvnhB_OXIeM'; how come?