What Breaks After You Deploy a Lovable App

Most Lovable apps do not break in preview. They break after deploy. That is the part many builders underestimate. The app looks finished, the flows work in the editor, the UI feels real enough, and then production introduces a completely different layer of problems: auth redirects behave differently on the live domain environment variables stop matching what preview assumed Stripe checkout works, but access state does not update correctly webhook handling starts feeling fragile the app quietly wants a backend that behaves like a real service This is why a lot of people misdiagnose the problem. They think: “Lovable failed.” But the real question is usually: Is this a production setup issue, a billing/auth truth issue, or a sign the workflow has actually outgrown the tool? What usually breaks first 1. Auth works in preview, fails on the live URL This is one of the most common patterns. The product seems fine until you test the real domain. Then login redirects, callback URLs, or session