Why can All Desktop users access all Dataflows

How do we restrict Power BI Desktop users from the Dataflows they have access to in the Online Service?

We have created a pretty robust security system in our online Service regarding what users have access to what datasets and reports as well as who can see what dataflows.

However, any user that has a Desktop app with a login can see all dataflows in the service; regardless or not of their permissions on the workspaces.

We want to give more users the desktop app, but there are dataflows that some of these users cannot have access to. Is there something I'm missing?

Thank you in advance