We recently upgraded springboot 3 which has hibernate 6. After this upgrade, while fetching records from DB with JPA queries we are getting java.lang.UnsupportedOperationException
This is happening when we include db call through events, its working when we include db call in api call

Below stacktrace:

Exception:[org.hibernate.type.descriptor.java.spi.CollectionJavaType.extractHashCode(CollectionJavaType.java:126), org.hibernate.type.internal.ConvertedBasicTypeImpl.getHashCode(ConvertedBasicTypeImpl.java:209), org.hibernate.type.ComponentType.getHashCode(ComponentType.java:236), org.hibernate.collection.spi.PersistentBag.nullableHashCode(PersistentBag.java:196), org.hibernate.collection.spi.PersistentBag.groupByEqualityHash(PersistentBag.java:183), org.hibernate.collection.spi.PersistentBag.equalsSnapshot(PersistentBag.java:132), org.hibernate.engine.spi.CollectionEntry.dirty(CollectionEntry.java:165), org.hibernate.engine.spi.CollectionEntry.preFlush(CollectionEntry.java:189), org.hibernate.event.internal.AbstractFlushingEventListener.lambda$prepareCollectionFlushes$0(AbstractFlushingEventListener.java:186), org.hibernate.engine.internal.StatefulPersistenceContext.forEachCollectionEntry(StatefulPersistenceContext.java:1327), org.hibernate.event.internal.AbstractFlushingEventListener.prepareCollectionFlushes(AbstractFlushingEventListener.java:186), org.hibernate.event.internal.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:83), org.hibernate.event.internal.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:52), org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:127), org.hibernate.internal.SessionImpl.autoFlushIfRequired(SessionImpl.java:1366), org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.lambda$new$2(ConcreteSqmSelectQueryPlan.java:136), org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.withCacheableSqmInterpretation(ConcreteSqmSelectQueryPlan.java:362), org.hibernate.query.sqm.internal.ConcreteSqmSelectQueryPlan.performList(ConcreteSqmSelectQueryPlan.java:303), org.hibernate.query.sqm.internal.QuerySqmImpl.doList(QuerySqmImpl.java:509), org.hibernate.query.spi.AbstractSelectionQuery.list(AbstractSelectionQuery.java:427), org.hibernate.query.Query.getResultList(Query.java:120), org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:129), org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:92), org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:149), org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:137), org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:170), org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:158), org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:164), org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:143), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:70), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123), org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:392), org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:223), jdk.proxy3/jdk.proxy3.$Proxy328.findBySourceAndEventType(Unknown Source), java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103), java.base/java.lang.reflect.Method.invoke(Method.java:580), org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354), org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163), org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:58), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:223), jdk.proxy3/jdk.proxy3.$Proxy328.findBySourceAndEventType(Unknown Source), com.by.abp.procedure.orchestration.service.ProcedureExecutionCompletionEventHandler.buildAndExecuteProcedureExecutionEvent(ProcedureExecutionCompletionEventHandler.java:144), com.by.abp.procedure.orchestration.service.ProcedureExecutionCompletionEventHandler.processEvent(ProcedureExecutionCompletionEventHandler.java:86), com.by.abp.procedure.orchestration.service.ProcedureEventProcessService.processEvent(ProcedureEventProcessService.java:81), java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103), java.base/java.lang.reflect.Method.invoke(Method.java:580), org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354), org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163), org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768), org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123), org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:392), org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119), org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184), org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768), org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:720), com.by.abp.procedure.orchestration.service.ProcedureEventProcessService$$SpringCGLIB$$0.processEvent(), com.by.abp.procedure.orchestration.event.ProcedureEventListener.receive(ProcedureEventListener.java:59), java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103), java.base/java.lang.reflect.Method.invoke(Method.java:580), org.springframework.messaging.handler.invocation.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:169), org.springframework.messaging.handler.invocation.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:119), org.springframework.kafka.listener.adapter.HandlerAdapter.invoke(HandlerAdapter.java:56), org.springframework.kafka.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:375), org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:92), org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter.onMessage(RecordMessagingMessageListenerAdapter.java:53), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doInvokeOnMessage(KafkaMessageListenerContainer.java:2907), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeOnMessage(KafkaMessageListenerContainer.java:2888), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.lambda$doInvokeRecordListener$57(KafkaMessageListenerContainer.java:2805), io.micrometer.observation.Observation.observe(Observation.java:565), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doInvokeRecordListener(KafkaMessageListenerContainer.java:2803), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.doInvokeWithRecords(KafkaMessageListenerContainer.java:2655), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeRecordListener(KafkaMessageListenerContainer.java:2541), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeListener(KafkaMessageListenerContainer.java:2179), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.invokeIfHaveRecords(KafkaMessageListenerContainer.java:1519), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.pollAndInvoke(KafkaMessageListenerContainer.java:1483), org.springframework.kafka.listener.KafkaMessageListenerContainer$ListenerConsumer.run(KafkaMessageListenerContainer.java:1357), java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1804), java.base/java.lang.Thread.run(Thread.java:1583)]

We tried upgrading hibernate version and no solution yet
same issue reported in below thread
https://github.com/spring-projects/spring-data-jpa/issues/3169