Junit4: @BeforeClass of superclass is not executed

Contrary to the statement in @BeforeClass annotation javadoc :
/** The @BeforeClass methods of superclasses will be run before those the current class. */
The @BeforeClass annotated method of superclass is not called if there is another @BeforeClass is subclass.

public abstract class SuperTest {
    @BeforeClass
    public static void beforeClass() throws Exception {
        fail("why don't you call me ?");    // never fails
    }
}

public class MyTestA extends SuperTest {
    @BeforeClass
    public static void beforeClass() {
        fail("Thanks for calling");     // fails here
    }

    @Test
    public void test() {
        fail("Failure expected from MyTestA.beforeClass()");  
    }
}

public class MyTestB extends SuperTest {
    @BeforeClass
    public static void beforeClass() {
    }

    @Test
    public void test() {
        fail("Failure expected from SuperTest.beforeClass()");    // fails here
    }
}