Error during managed flush [Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect)

Hibernate ORM
1

MySQL version: 5.7.27
Hibernate Core version: 5.3.9
Spring Boot version: 2.1.4

I’m trying to delete a list of entities, and notice the following exception at end of delete operation:

Caused by: org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect) :
	at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:2525)
	at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3357)
	at org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:3231)
	at org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:3632)
	at org.hibernate.action.internal.EntityUpdateAction.execute(EntityUpdateAction.java:146)
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604)
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:478)
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:356)
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:39)
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1453)
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:510)
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3282)
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2478)
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:473)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:178)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:39)
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:271)
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104)
	at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:532)
	... 22 common frames omitted

During troubleshoot, I realized the issue only occur when a column of the entity (with name errors) carries non-null value. Here’s the DAO class:

@Entity
public class MyEntity {
    ... other fields ommited ...

    @Convert(converter = TaskErrorConverterJson.class)
    private TaskError errors;
}

Any hint? Thanks!