How this failure appears in Lovable
Lovable is often used for React-style SaaS prototypes and Supabase-backed applications. With Supabase RLS problems, the builder may show a healthy preview while the published domain, another user role, a refreshed session, or a connected service reveals the real failure.
Why the obvious AI fix may miss it
Supabase configuration, generated component state, authentication callbacks, and environment variables often drift between preview and production. For this symptom, the investigation also considers missing policy, incorrect auth UID relation, service key misuse, client-only filtering. Editing the visible component again will not help if that component is only reporting a failed request or policy decision.
The evidence that narrows the diagnosis
Useful first evidence includes test with two isolated accounts; review policy predicates; identify every client query. For Lovable, also identify whether the behavior differs between editor preview, shared preview, exported code, and the real production URL.
Safe access for a Lovable repair
A useful access plan may include project access, Supabase project details, deployment logs, and a safe test account. Start with names, URLs, logs, and screenshots. Do not put passwords, recovery codes, private API keys, or service-role credentials in the initial request.
What not to do before a repair
Do not disable RLS in production or ship the service-role key to the browser. Preserve the last known-good Lovable version or export and avoid several broad prompt changes at once. That keeps the failure reproducible.
Repair inside Lovable or outside it?
Keep the repair in Lovable when its settings, workflows, code surface, and test tools expose the responsible layer. Export, source-code work, or a bounded migration becomes appropriate when the builder hides the cause, cannot support a safe implementation, or prevents repeatable production testing.