This began failing with the patch from JDK-8069545.

---

class C<T> {}

<S> C<S> makeC(Function<String,S> f) { return null; }
<T extends Comparable<T>> void eatC(C<T> list) {}

void test() {
    eatC(makeC(x->x));
}

---

Expected: compiles, S = T = String

Actual: error:

error: method eatC cannot be applied to given types;
    eatC(makeC(x->x));
    ^
  required: C<T>
  found: C<Object>
  reason: inferred type does not conform to upper bound(s)
    inferred: Object
    upper bound(s): Comparable<Object>,Object