I never have that issue. I’ve had it on other cars with poorly designed systems. But the Hyundai one is the smoothest I’ve ever used and it’s always back on before my foot is back on the gas. Not sure what you’re doing wrong.The problem I have with that stupid thing is it shuts off almost immediately, so literally a small fraction of a second before I get back on the gas on a stop sign. The car is not expecting having to restart immediately upon stopping, so the starter makes a disturbing noise sometimes. After 1K miles, I'm remembering to shut the damn thing off almost every time, so it shouldn't be an issue from now on. It's just not a smart enough system yet, especially for folks like me, who rarely drive in traffic.