templates doesn't have any effect

[formorer]

Describe the bug

The Terraform terraform only allows to use the templates = [ "template" ] notation. Unfortunately it seems that it doesn't have
any effect.

To Reproduce

I can reproduce this with config files:

template Host "foo" {
  vars.foo = "bar"
}

object Host "bar" {
  templates = [ "foo" ]
  check_command = "dummy"
}

Restarting Icinga and asking the API, tells me that the template is defined:

http -a root:$ICINGA_PASSWORD --verify no https://localhost:5665/v1/objects/hosts  | jq ".results[].attrs.templates"
[
  "foo"
]

But:

http -a root:$ICINGA_PASSWORD --verify no https://localhost:5665/v1/objects/hosts  | jq ".results[].attrs.vars"
null

When using import we get the interestring effect that there is also a template defined like the host:

http -a root:$ICINGA_PASSWORD --verify no https://localhost:5665/v1/objects/hosts  | jq ".results[].attrs.templates"
[
  "bar",
  "foo"
]

And now we have:

http -a root:$ICINGA_PASSWORD --verify no https://localhost:5665/v1/objects/hosts  | jq ".results[].attrs.vars"
{
  "foo": "bar"
}

Also adding the hostname to the list of templates doesn't have any effect.

Include as many relevant details about the environment you experienced the problem in

• Version used (icinga2 --version): 2.11.4
• Operating System and version: Debian 10
• Enabled features (icinga2 feature list): api checker debuglog mainlog notification

[Al2Klimov]

You have to import the template explicitly.

[formorer]

That doesn't help me. This should work as documented, why doesn't it work?