Well I’ve figured it out. The form wouldn’t submit whenever a choice other than the final choice was chosen for the radio button tv_nr_risk_ie. I varied the number of options from 2 to 4, and selecting the final option is the only way the form would submit in every case. None of the other radio buttons on the page did this so the behaviour seems pretty bizarre – maybe has to do with the fact it’s the final input field on the form before submit.
In any case, I simply changed the control from a radio button to a dropdown menu and my issue is resolved.
