Does not seem to work with solidStart

[Sleepful]

Tried the example from https://github.com/solidjs-community/solid-transition-group/blob/main/dev/kitchen-sink.tsx#L68 , it simply disappears

const SwitchCSS: Component = () => {
  const [page, setPage] = createSignal(1);

  createEffect(() => {
    console.log(page())
  })

  return (
    <>
      <button onClick={() => { setPage(p => ++p) }}>Next</button>
      <br />
      <Transition mode="outin" name="fade">
        <Show when={page()} keyed>
          {i => <div style={{ "background-color": getRandomColor(), padding: "1rem" }}>{i}.</div>}
        </Show>
      </Transition>
    </>
  );
};

.fade-enter-active,
.fade-exit-active {
  transition: opacity 0.5s;
}
.fade-enter,
.fade-exit-to {
  opacity: 0;
}