Hi @lucassimines
That is weird. The conditional logic is working on my end. Could you please try to reproduce the issue on one of the WordPress’ stock themes (like Twenty Fifteen) with other plugins deactivated? If the issue disappears, then you can activate the theme and plugins one by one to see which one causes the issue.
Keep in mind that you need to create the hidden field in one field group with the select field.
I hope this helps.
