Age Regression Setting

The 'Age Regression' setting doesn't seem to work as expected just in terms of how selecting the option on the settings page. If I select "high" and then go to save settings, it switches back to "normal" after saving. The only way I can keep it on "high" is if I first change "In-season Training Gains" to High first. In fact, whenever I change In-season training gains, it switches Age regression too to the same setting. So if I change In-season Training gains to low, it'll automatically switch the age regression setting to low as well.