5 Real Bugs I Found in AI-Generated Code (That Looked Fine)

5 Real Bugs I Found in AI-Generated Code (That Looked Fine) AI makes building easy. It also makes it easy to ship broken systems. I built a working app in few hours. No planning. No architecture. No real thinking. Just prompts. It worked. Or at least… it looked like it worked. That’s the part that worries me. Because “working” is doing a lot of heavy lifting here. 1. The "Everything Is Admin" Bug AI wrote this: if ( user . role = " admin " ) { allowAccess (); } At a glance, nothing feels off. But that’s assignment, not comparison. Which means every user becomes admin. No crash. No error. No warning. Just a silent failure sitting in your code. This is exactly the kind of bug that slips into production. 2. The API That Never Existed AI assumed this: const user = await getUser (); console . log ( user . name ); Looks reasonable. But the real response was: { data : { user : { name : " John " } } } It worked during testing because the mock matched the assumption. It broke instantly with rea