I'm currently using ArcGIS Enterprise 10.9.1 and am having an issue that did not previously exist in our 10.6.1 environment.
Using a Portal account with admin permissions, I cannot share items owned by another user to any groups. Both members (myself and the person who owns that item) are in the group I am trying to share the item to. I've verified in the group settings that anyone in the group can contribute content.
This was not an issue in 10.6.1. I was able to share items, regardless of who they are owned by, to any group, as long as the item owner was also in that group.
Is this expected behavior in 10.9.1? If not, is there anything I need to do differently to be able to share content not owned by myself?