Rule stopped working after upgrading from 5.6.0 to 6.5.0 -------------------------------------------------------- Key: DROOLS-1570 URL: https://issues.jboss.org/browse/DROOLS-1570 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 6.5.0.Final Reporter: Manish Java Assignee: Mario Fusco I have the following POJO: {code:java} package org.example.domain.purchase; public class Order { private OrderType type; } {code} and the following rules: {code:java} package org.example.domain.purchase; rule "consignment" when $order: Order(type.equals(OrderType.CONSIGNMENT)) then System.out.println("Processing consignment order."); end rule "sale" when $order: Order(type.equals(OrderType.SALE)) then System.out.println("Processing sale order."); end rule "transfer" when $order: Order(type.equals(OrderType.TRANSFER)) then System.out.println("Processing transfer order."); end {code} These rules work fine with Drools v5.6.0 but do not fire after upgrading to v6.5.0. Even the following simple rule does not fire: {code:java} package org.example.domain.purchase; rule "order" when $order: Order() then System.out.println("Processing an order.") end {code} A sample project is available on [Github|https://github.com/manish-in-java/spring-drools-validation].