Different names for "My Workspace" id (O365 Audit ...

Hi,

I'm analyzing logs from Office 365 Audit Log and I'm finding some data that I don't understand at all.

After exporting logs from https://protection.office.com portal I analyze them with PowerBI and I found the following:

I'm counting distinct WorkspaceNames WorkspaceId, all seems to be ok, but when I expand the names of the Workspaces with WorkspaceID = "My Workspace" I found thast there are workspace that aren't named as "My Workspace".

¿Is this possible?

I have tried to rename My workspaces in "Edit Workspace" but there isn't this option.

Searching about this I have only find this answer https://community.powerbi.com/t5/Service/renaming-a-workspace/td-p/395441:

For App Workspace, if you are the owner or have Admin permissions, you can rename it as Greg_Deckler suggested. For My WorkSpace, it is not able to change the default name.