I recently have been trying to create and sort our organization's content using the groups feature. I have created all the groups. When I go to share an item to a group on the item's overview page, I get different group options from when I try to share it from the list on the Content pane. I want to be able to see all my available groups in one list when going to share an item.
When I called Esri Support about this, my analyst referred me to this forum to post this as an idea for future improvement.