[BUG]: snippet sends pageView if enableAutoRouteTracking = false about applicationinsights-js HOT 1 OPEN

Yes, this is by design so that the SDK completes initialization.

If you don't want this initial "pageview" then you can either not use the snippet, or add / include a telemetry initializer which will be called once the SDK has initialized (and is processing the backlog of queued events -- which will include this trackPageView) and then when you detect this just return false (to cause the event to be dropped).

The initial page view also includes a page view performace event and is the only trackPageview that will cause this performance event to be sent. The auto route tracking (generally) does not cause this event, the only exception is that when using npm packages the performance event is sent as part of the first trackPageview (which is also what happens here as part of this "queued" event).

from applicationinsights-js.