different v4 API response with missing / empty annotations parameter

[Karl Dietz]

Hi,

I'm trying to find my way to the schedule data slowly. Starting with
locating the right channel_group. The following request leads to
a list of empty elements:
http://atlas.metabroadcast.com/4/channel_groups.json?key=KEYGOESHERE
{
"channel_groups":
[
{ },
...
{ }
],
...

If I add "no annotations" I get the expected result:
http://atlas.metabroadcast.com/4/channel_groups.json?key=KEYGOESHERE&annotations=
{
"channel_groups":
[
{
"id": "hkxt",
"title": "Sky HD",
"uri": null,
"type": "platform",
...

I can reproduce the behavior with the channels endpoint.

Am I doing something wrong or is there an issue with the default for
returned data?

Regards,
Karl