Primary User limited to Azure Tenant specified - Potential bug?

I find it odd that the Primary User dropdown isn’t drilled into the tenant chosen. Like, I have chosen a specific tenant, why is that dropdown showing me users from other tenants? Part of me feels like this has to be a bug, because there’d be no reason why I would want to pick a user from Company A, as the user for a computer for Company B.

It was confirmed that this is indeed a bug.

@Max_Trivers yes this is a bug. We have an issue open about this internally to have the primary user list only load the users from the tenant the computer is in.

It looks like it’s moved up and appears to be fixed in the latest developer build we are testing, so likely will make it into the next release.