ChatMemberUpdated.invite_link missing when joining public groups #428Description
Hi. I did some testing and it looks like the invite_link field of the ChatMemberUpdated class is present only when joining private groups. For public groups, the field is missing even when the user does join via a link and not via the username of the group.
I expect that the added value of the invite link is smaller for public groups as they can be found by anyone, but this behavior is was unexpected as the documentation does not suggest it. If you could document this behavior or if the behavior could be updated, I'd be grateful.