503 on wildcard redirect

[tersor]

When creating a site with SSL wildcard, the wildcard http --> https is returning 503.

$ curl -Ik http://bar.example.com 
HTTP/1.1 301 Moved Permanently
Location: https://bar.example.com/

$ curl -Ik https://bar.example.com
HTTP/2 200 

$ curl -Ik https://foo.bar.example.com
HTTP/2 200 

$ curl -Ik http://foo.bar.example.com 
HTTP/1.1 503 Service Temporarily Unavailable

Is this to be expected?