HHH-14014 test demonstrating the issue is solved

hibernate-core/src/test/java/org/hibernate/orm/test/annotations/refcolnames/misc/Misc5Test.java

@@ -0,0 +1,56 @@
+package org.hibernate.orm.test.annotations.refcolnames.misc;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.JoinTable;
+import jakarta.persistence.ManyToMany;
+import jakarta.persistence.Table;
+import org.hibernate.testing.TestForIssue;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.junit.jupiter.api.Test;
+
+import java.io.Serializable;
+import java.util.HashSet;
+import java.util.Set;
+
+@DomainModel(annotatedClasses = {Misc5Test.Animal.class})
+@SessionFactory
+@TestForIssue(jiraKey = "HHH-14014")
+public class Misc5Test {
+	@Test 
+	void test(SessionFactoryScope scope) {
+		scope.inTransaction(x -> {
+			Animal a = new Animal();
+			a.name = "Dragon";
+			a.key = "xxxx";
+			Animal b = new Animal();
+			b.name = "Lizard";
+			b.key = "yyyy";
+			a.relatives.add(b);
+		});
+	}
+
+	@Entity
+	@Table(name = "animal")
+	public static class Animal implements Serializable {
+		@Id
+		@Column(name = "id")
+		@GeneratedValue(strategy = GenerationType.AUTO)
+		private Integer id;
+		@Column(name = "name", nullable = false, unique = true)
+		private String name;
+
+		@Column(name = "ukey", unique = true)
+		private String key;
+
+		@ManyToMany
+		@JoinTable(name = "relatives", joinColumns = @JoinColumn(name = "ukey1", referencedColumnName = "ukey"), inverseJoinColumns = @JoinColumn(name = "ukey2", referencedColumnName = "ukey"))
+		private Set<Animal> relatives = new HashSet<>();
+	}
+}