Supabase RLS in production: four traps that silence your queries

« Your enrollments — how many? Because I see zero » One Tuesday morning, I had just enabled RLS on eighteen tables of Rembrandt , L'Atelier Palissy's ERP. Policies written, tested in direct SQL , everything passing. Prod deploy, coffee. Françoise calls from the next office — she doesn't come over, she shouts from her chair. « Bon. Tes inscriptions sur le site de Maisons-Laffitte, il y en a combien, dis-moi ? Moi j'en vois zéro. » — Right. Your enrollments on the Maisons-Laffitte site, how many a