Why does UICloudSharingController ask to add participants when I choose to let anyone with the link have access?

I'm trying out UICloudSharingController. I noticed that When I select "Anyone with the link" for "WHO CAN ACCESS" in Share Options, then click to copy the link, a screen comes up saying "Add People" at the top. If anyone with a link can access this share, why does it ask me to add participants?

It seems I remember that before it didn't ask me to add participants when I select "Anyone with the link".

I have since tested the link when I select "Anyone with the link" for "WHO CAN ACCESS". Only Apple IDs that are added by the owner can get access to the share. When I test the URL on another using a different Apple ID than the device that shared the share, I get a message saying that either the owner stopped sharing or I doesn't have permission.

Why does UICloudSharingController ask to add participants when I choose to let anyone with the link have access?
 
 
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