Erroneous Unaccessible Property of Two Disjoint Union Types that are Intersections of Another Type

I'm not sure if that title makes any sense. But I have two scenarios in a React component. Both scenarios have some shared props and one or two props that are unique to either scenario A or B. Flow warns on all three of the unique properties of A and B that they are unaccessible. See:
https://flow.org/try/#0C4TwDgpgBAygFgQwE4QCZQLxQN5QPYB2EAXFAM7BICWBA5lAL4BQokUAgpjlMAO56kK1OoygAyWIhSoW4aACEuuYHBQlylGvQbjJyNLLYBhLpwA+UeUyYBjQhSgAzPHi4AKMEjxgypIwEpSAH4hLUwAPiYASFYIPEcoT28yADoVNUwMLAByULps6KigxK8fNNUICELiQtj4kuS0-kycvNoCqM7ipLK+PEKo0jqEntTCaCzWzXyBooay8dnSAgBXABs1piA