java.lang.ClassCastException: class org.example.facts.ReferencedType cannot be cast to class org.example.facts.ReferencedType (org.example.facts.ReferencedType is in unnamed module of loader org.drools.dynamic.DynamicProjectClassLoader$DefaultInternalTypesClassLoader @59901c4d; org.example.facts.ReferencedType is in unnamed module of loader org.drools.dynamic.DynamicProjectClassLoader$DefaultInternalTypesClassLoader @5e1fc2aa)
 
 at org.drools.base.org.example.facts.ReferencedType1921143808$setStr.setValue(Unknown Source)
 at org.drools.core.base.ClassFieldWriter.setValue(ClassFieldWriter.java:164)
 at org.drools.core.base.ClassFieldAccessor.setValue(ClassFieldAccessor.java:246)
 at org.drools.core.factmodel.ClassDefinition.set(ClassDefinition.java:278)
 at org.example.reproducer.FactTypeUpdateTest.testUpdateThenSetFactAttribute(FactTypeUpdateTest.java:132)
 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.base/java.lang.reflect.Method.invoke(Method.java:566)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
 at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
 at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
 at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
 at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
 at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
 at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
 at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
 at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
 at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
 at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

 package org.example.facts 
 declare ReferencedType
 str : String
 end
 declare UnreferencedType
 x : int
 end
 
 package org.example.rules
 import org.example.facts.*;
 rule "rule updating ReferencedType"
 when
 $x : ReferencedType( )
 then
 $x.setStr("foo");
 update($x);
 end

 package org.example.facts 
 declare ReferencedType
 str : String
 end
 declare UnreferencedType
 x : int
 y : String // NEW ATTRIBUTE ADDED HERE
 end
 
 package org.example.rules
 import org.example.facts.*;
 rule "rule updating ReferencedType"
 when
 $x : ReferencedType( )
 then
 $x.setStr("foo");
 update($x);
 end

updateToVersion(); // Updates the KieContainer
KieBase kiebase = kieContainer.getKieBase("ExampleKiebase");
FactType referencedType = kiebase.getFactType("org.example.facts", "ReferencedType"); 
Object instance = referencedType.newInstance();
referencedType.set(instance, "str", "bar"); // Throws ClassCastException