Mockito doesn't correctly stub methods taking list as argument

I am trying to mock a class and return a stubbed list of objects when a method on the mocked object is called. Lets consider following code :

interface MyRepositry{
       public List<MyClass> getMyClassInstances(String str,Long id,List<Integer> statusList);
}

I am mocking above method ivocation as follows :

when(myRepository.getMyClassInstances("1234", 200L, stubbedList)).thenReturn(stubbedMyClassInstanceList);

where

 stubbedList 

is the list I create by inserting two integers 1 and 3. In real call also I pass the list I construct which has integers 1 and 3. Point ot note here is stubbedList object and the list object in real call are different but always contain two integers 1 and 3.

stubbedMyClassInstanceList    

is the stubbed list of MyClass instances.

However mockito return an empty list when i run the test. I did some debugging and I guess mockito is not able to match the list object that I am using in

      when(..).thenReturn(..)

call and in actual call and hence doesn't find the correct signature.

I cannot use

anyList() 

matcher as I always pass list of two integers (1 and 3).

I have resolved the problem by using custom

     ArgumentMatcher 

as follows :

     class StatusMatcher extends ArgumentMatcher<List> {
    public boolean matches(Object list) {
        List statuses = ((List) list);
        return (statuses.size() == 2 && statuses.contains(1) && statuses.contains(3));
    }
}

So the question is :

1) Is my guess about why the stubbing/mocking not working correct? 2) and is the solution I have used correct?