Random IDs are identified

[DawnMD]

Bug description

The last 2 days, users who are not been identified are also showing in the people and groups tab. We implemented posthog.setPersonPropertiesForFlags({ '$current_url': window.location.href, }) and thought that might be causing it. But after removing that code, its still capturing the users. Now I'm not sure if that posthog property was causing the issue or not.

Additional context

Before publishing the experiment and feature flag it was working normally. Feature flags implemented like I don't think this is causing the issue. Correct me if I'm wrong. Also, no set or identity event is being called with the random IDs Idenitfy effect

[idrisssakhi]

All of our users get duplicated because of this issue. reult expirements does not work correctly or we end-up with multiple duplicated users.

[marandaneto]

@PostHog/team-feature-flags