Pretty sure this is a bug:
In the SM203525 Space Usage / List of Snapshots:
Highlighted the first snapshot, which as you can see is Kirk Properties 2021-03-06.
Clicked on the name, it brings up the tenant screen, but…
…while it shows the correct tenant it shows the wrong snapshot, and one that doesn’t even belong to this tenant! Dangerous, to say the least!
<happy dance>
You’re right, this is a bug 
NP. Yes, from the tenant screen we get only the snapshots we’ve either taken or imported.
Sorry, didn’t realize that you started from the space usage page and clicked an hyperlink.
If you open the Tenants sceeen directly and select Tenant ID 3 (Kirk Properties), do you see the correct snapshots?
I don’t see how you come to that conclusion. Fine that a snapshot might be visible to another tenant, but that was NOT the snapshot that we re trying to open. That SCREAMS bug!
I don’t think this is a bug -- someone probably clicked “Change Visibility” to make this snapshot visible to other tenants.
From Help:
To Toggle the Visibility of a Snapshot
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