Store binding inside each is broken

[Rich-Harris]

Describe the bug

This doesn't work:

{#each $items as item, index}
  <input bind:value={item.text}>
{/each}

To Reproduce

https://svelte.dev/repl/358a3620fd6b4f159a90268a6b2035a4?version=3.9.1

Expected behavior

Editing the text input should update the store

Severity

Seems bad

Additional context

https://stackoverflow.com/questions/57626273/svelte-component-not-re-rendering-with-new-values-if-text-input-is-inside-an-eac

[ghost]

As a workaround, this works:

<input bind:value={$items[index].text}>

Might help track down how to correct it.