Consul-template service api function returns some hex values

Hello everybody,
inside consul-template I’m using service as such

{{ service "dc_cvt.patroni-cluster-a|any" }}

and this expression returns some strange result:

[0xc000175930 0xc000175a00]

But this expression

{{ range service "dc_cvt.patroni-cluster-a|any"  }}
{{ .Node }}
{{ end }}

returns list of nodes taged by dv_cvt just fine.

Could anybody tell me what’s wrong with expression or where to look to solve this issue?