compoundDemo example allows free text but you can't save it

[pdurbin]

Free text is allowed:

But you get a validation error (the normal one: "Validation Error – Required fields were missed or there was a validation error. Please scroll down to see details.") and when you scroll down, there are no errors. No * with a hint of what to fix. Nothing in server.log, nothing in the JS console.

@qqmyers says the free text stuff should be controlled by this (so not Dataverse code):

dataverse-external-vocab-support/scripts/skosmos.js

Line 208 in 6055e9a

tags: allowFreeText,

(that's the commit I tested on, by the way, 6055e9a).