A search bar that broke my brain.
I remember the moment I saw Envato move their search bar to the bottom of the page on desktop. I was frustrated enough to make noise about it publicly. Not because it was ugly — it wasn't. It was a deliberate design choice. But it was wrong. Every browser search bar is at the top. Every major search interface on desktop is at the top. Nine out of ten search bars on the internet live at the top of the screen. That's not a convention worth breaking without a very good reason, and there wasn't one here.
Where bad UX actually comes from
Good UX is upstream of the interface. It's a decision before it's a design. And most bad UX decisions aren't made by careless people. They're made by people who optimised for the wrong thing. When I worked on the sign language management system at ASL Communication, my job wasn't to make screens. It was to give a team of developers a clear, consistent foundation to build from. Every layout decision, every component placement, every interaction state had to make sense without me in the room to explain it. That's the real test of good UX work.
UI vs UX. The distinction that matters
UI is what people see. UX is what people experience. And experience happens whether you designed for it or not. The Envato search bar technically works. You can find it. You can use it. But it creates friction, physical friction because your hand has to travel further, and mental friction because your brain has to override muscle memory. Small frictions compound. They're why people leave apps and never come back without being able to tell you exactly why.
The only question worth asking first
Design for the decision, not just the screen. Ask why before you ask how. The best UX is invisible. The worst UX is a search bar at the bottom of the page that a tired designer is still thinking about at midnight.