I would also like to see how to resolve this, can you post your findings back to this thread?

I encountered the same thing. It is my understanding that it's supposed to work that way. We only manage company devices in Jamf. We don't want BYOD users' personal devices enrolled into Jamf. There needs to be a way to disable users from being re-directed from the Microsoft Intune portal to the Jamf registration portal on the Mac computers.

I've checked direct with JAMF and found some issue is going on from Microsoft end, which has to be fix in this month September.