Funny how the PR is all “it’s your choice,” but the actual Privacy Policy for Smart Window says external activity gets uploaded to third-party servers.

Smart Window infers information about you based on your interactions with the assistant and your Firefox browsing activity, including websites you have visited. This may include activity outside of Smart Window (such as in classic windows), but it does not include activity in Private Windows.

Of course all this data gets sent to a company that doesn’t really respect privacy at all .

I did when I uninstalled Firefox.