When sharing ArcGIS Online items in GeoHUB publicly, remember to follow our approval workflow guidelines first. Then, be sure to remove ‘wadoh.maps’ from the URL if you’re copying it from the browser’s address bar.
Leaving it in could prompt users to sign into ArcGIS Online. To work around this issue, simply copy the URL from the URL section in the lower-right corner of the item page — where ‘wadoh.maps’ will already be removed for you.
Please reach out the GIS team if you have any questions or concerns about this.