Whatsapp Web redirecting Issue when using ‘Click to chat’

I think there is a bug on web whatssap on the redirection to chat using ‘Click to chat’. If I create a redirect with the link

   https://wa.me/15551234567?text=I'm%20interested%20in%20your%20car%20for%20sale 

It redirects to web.whatssap but it does not redirect to the new chat with the number passed.It is a bug or I am doing something wrong?

thanks