$effect does not run after async derived completes, but after the next wakeup

[RuthgerD]

Describe the bug

the following code does not work:

const foo = $derived(await a());

$effect(() => {
  console.log("hello", foo)
})

however if you mutate an unrelated $state variable the effect is suddenly run, indicating that this is an unintentional bug.

see reproduction for a full example, press the "wake" button to observe this behaviour.

Reproduction

https://svelte.dev/playground/267ec9aa67c248d8b2d65aaffd1f02f8?version=5.36.16

Severity

annoyance