“Zoom enabled” bug

For no reason, “zoom enabled” shows up on my screen randomly. It used to always happen when I dragged two fingers down to read the screen. Oddly, this bug never happens when I double tap with three fingers, which is what triggers zoom. Zoom and read screen have worked together for years. They still work properly on another iPhone and on two iPads. Apple chat people wasted 70 minutes and didn’t even understand the problem. The Genius Bar guy tonight reset my settings, thanks for that disruption, but it still happens. I have also restarted the phone many times, and the bug survived three iOS upgrades, too. It shows up randomly, and serves no purpose. Why would anyone ever want “zoom enabled” to be displayed? I know, I turned it on. Why was the software released with this bug?