False positive in collections dccd

[vicb]

[a b c] -> [b a c] would report a move for c

collection: b[1 -> 0], a[0 -> 1], c
previous: a[0 -> 1], b[1 -> 0], c
additions: 
moves: b[1 -> 0], a[0 -> 1], c
removals: 

UT (failing on master):

        it('should not report unnecessary moves', () {
          var list = ['a', 'b', 'c'];
          var record = detector.watch(list, null, null);
          var iterator = detector.collectChanges()..moveNext();

          list..clear()..addAll(['b', 'a', 'c']);
          iterator = detector.collectChanges()..moveNext();
          expect(iterator.current.currentValue, toEqualCollectionRecord(
              collection: ['b[1 -> 0]', 'a[0 -> 1]', 'c'],
              previous: ['a[0 -> 1]', 'b[1 -> 0]', 'c'],
              additions: [],
              moves: ['b[1 -> 0]', 'a[0 -> 1]'],
              removals: []));
        });

[mhevery]

@vicb That seems wrong, C should be suppressed, so your tests should be passing.