What lens are you using this has an effect on that setting.
-Demetrius Bodies: EOS 40D & EOS 5D Mark IV Lenses: EF Holy Trinity, EF 50mm F/1.8 STM, EF 70-210mm F/4 & EF 85mm F/1.8 USM Speedlites: 420EX, 470EX-AI, 550EX & 600EX II-RT
It might help if you could show pictures of your focus menu screens, and back and top of the camera. That way someone may see another setting that has caused this to happen.
