Hello @Anonymous User
Yes, I can confirm through the Options tab that I am signed in.
Here's a comparison between results to the My Content call in Teams:
=46 items
And then in ArcGIS Online:
=449 items
I realize that there are products that are not supported yet in Teams, but that is quite the difference. Also, I should be seeing ones that I own and serve out.
Could it have something to do with the credentials of others in Teams? Many in our overall local government do not have credentials to our ArcGIS Online organization.