In my last article , I wrote about UX bugs that pass every test — like a wallet with no visible balance. This one is about the biggest category of those bugs: what your app says, or doesn't say, when something goes wrong. The complaint came in as: "The app keeps logging me out randomly." Random logouts are a scary bug report. They suggest session corruption, cookie issues, maybe something security-shaped. So we dug in and found that nothing was random at all. The portal used short-lived ...