title: Why is Firefox Sync icon showing in my task bar when my Mac is completely offline?
body: <p>I've just loaded FF onto a new Macbook Pro (Monterey), and have also recently signed up for Firefox Sync - to import bookmarks, passwords, etc into this new installation. I'm perplexed at what I'm seeing on the new machine, though. I have the firewall on, all Sharing settings off, Bluetooth off, wifi <em>off</em>. No ethernet. The machine is hypothetically completely air-gapped.</p>
  <p>But the new machine is displaying the Firefox sync icon (superimposed on the logo is a little picture of a laptop, hovering over it says &quot;from laptop&quot;). This icon appears when I open Firefox on the old machine. It's very unsettling. Nothing on the new machine indicates there should be any communication between FF instances.</p>
  <p>Can anyone tell me how this would be happening? Is there some undisclosed p2p action going on between the machines based on physical proximity?</p>