Defining non default Kie Base and Kie Session results in a hang in the Test Scenario Runner

If I use the Settings of a project to created a Kie Base and Kie Session I end up with the UI hanging, and I can't continue until I do a control-R to reload the web application. Web Applications should never hang.

Given a DRL like this:
package com.myspace.annual_rent_decision;

import com.myspace.annual_rent_decision.Lease;

rule "Is signoff required"

when
lease : Lease(leaseAgreementAmount >= 80000)

// eval(true)
then
System.out.println("Setting signOffRequired to True");
lease.setSignOffRequired(true);
end

A simple fact model to support it. You will find the below issue.