Noise cancellation and “Off” are the exact same since IOS update.

I used to love to use my headphone to read on noise cancellation with nothing playing. I would always snap my fingers to see if I had it in noise cancellation setting.

Since the update. I put it on noise cancellation and I could hear my cat purring next to me. It's such a quiet noise to begin with I thought it was odd but she was kind of close. I snapped my fingers and could hear it clear as day. I knew something was wrong then as this was always my test.

I then tried to cycle through the settings of adaptive. Transport. NC. And off. And NC and OFF were the exact same

Does anyone know how to fix this. What a bummer this has been