Unknown viewer in my file

I have a full seat Professional account I’m using for a side hustle. It’s a proper thing with a limited company, etc.

Even thought the account is a few months old I just started doing work properly. I logged in for the first time since a few months ago.

I have not shared any files, links, etc. yet and I’m the only user. No other designers etc.

i thought I give Figma Make a try to see if it helps with getting the product to market any quicker and behold a couple of hours into the session someone appears. 
 

It didn’t show any name on hover the tooltip was empty. I wasn’t running the app in several windows. So is it just accepted, that what I’m guessing is, Figma staff peeking into our documents? Potentially checking out our IP? Or what’s happening here?

The little dude lingered for at least 20-30 min and disappeared. 
 

Any advice? Should I be moving to penpot when the annual renewal comes around?