Here is smartthings support response below:
Greetings from Smartthings!
We have received an update from Escalation Team, please check their reply below;
“The location loop issue while adding the hub is currently a known issue that our devs are currently looking into. Unfortunately, there is no ETA on a fix for this. Apologize for the delay and thank the user for their patience while we continue working on the issue. Let the user know we’ve had multiple users contact us with this issue, so we are working to resolve as quickly as possible.”
Our sincere apologies again regarding this but our developers team are working on it now and we’re hoping and waiting for a fix soon as well.
Thanks.
So I now have a hub I can’t use until they figure this out, oh well…