This only happen on ESRI hosted version of Arcgis online
ESRI hosted default domain your-org-name-here.hub.arcgis.com
ESRI hosted customized domain your-customized-domain-here.gov
I have not see this issue on local hosted Arcgis Enterprise Portal
local hosted domain: your-portal-subdomain-here.your-org-domain.gov
Another way you can add a bounch of items at one time
