Group only show member if more than 1?

Group only show member if more than 1?

I created a group and added one member.  Shared a document using that group and the recipient was able to access the document.  Now when I view Member details of that group it only shows the "moderator" with no members.  Why?  I noticed if I add two or more members then it will show all but one member.

Also, I noticed that sharing a document using a specific e-mail address does not send an e-mail to the recipient but does give feedback stating the document has been shared successfully.

Very unintuitive or buggy software.