Receive pending messages in a Facebook group via GraphAPI as a group administrator

Question

I am the administrator of the Facebook group. When I checked the last time a few months ago, Facebook GraphAPI will return all messages, including. those who were still awaiting approval when I requested group feed.

However, when I checked yesterday, messages still awaiting approval were no longer displayed (although I could not find any information about this change in the API change log).

Is there any way to receive pending messages? I don’t even need to know if they are waiting or approved, it will be enough to receive all messages through the API.