Sandbox: https://codesandbox.io/s/cranky-kapitsa-op3jh

Repro: type "a" and then after a second "b"

Expected: Eventually you'll see "ab" in all fields. Pending "..." indicator goes away.

Actual: You'll keep seeing "a" in low pri field. Pending "..." indicator is stuck.
const prevDeps: Array<mixed> | null = prevState[1];
      if (areHookInputsEqual(nextDeps, prevDeps)) {
        return prevState[0];
      }
    }
  }
  const nextValue = nextCreate();
  hook.memoizedState = [nextValue, nextDeps];
  return nextValue;
}
function mountDeferredValue<T>(
  value: T,
  config: TimeoutConfig | void | null,
): T {
  const [prevValue, setValue] = mountState(value);
  mountEffect(() => {
    const previousConfig = ReactCurrentBatchConfig.suspense;
    ReactCurrentBatchConfig.suspense = config === undefined ? null : config;
    try {
      setValue(value);
    } finally {
      ReactCurrentBatchConfig.suspense = previousConfig;
    }
  }, [value, config]);
  return prevValue;
}
function updateDeferredValue<T>(
  value: T,
  config: TimeoutConfig | void | null,
): T {