I have an entityreference view with a contextual filter that depends on a numerical range. The range data originates in a taxonomy.

In Entityform, I have used this entityreference to create a field with radio buttons. I have a second field that pulls the taxonomy term names (in this case the numerical values). I’m using this field as the dynamic argument for the entityreference form.

I’m reasonably sure I have the right configuration, because when I give the taxonomy field a default value in settings, the second field sorts correctly. If I change that default value, it changes accordingly. However, when I change the taxonomy value to another number within the form interface, a “please wait” icon pops up for a second, but the second field does not refresh.

There is a reference to an additional checkbox with taxonomy fields here at StackOverflow, but I can’t find this box in any of my fields or related settings.

Is this an issue with Entityform or Ajax? A bug? Did I miss a checkbox somewhere?