Getting remote functions waterfall despite following the docs

[jrmajor]

Describe the bug

This is what the docs for await_waterfall warning recommend to do to avoid waterfalls:

let aPromise = $derived(one());
let bPromise = $derived(two());

let a = $derived(await aPromise);
let b = $derived(await bPromise);

And this is what I'm doing:

let quotesPromise = $derived(getQuotes());
let authorsPromise = $derived(getAuthors());

let quotes = $derived(await quotesPromise);
let authors = $derived(await authorsPromise);

I fail to see any difference between what I'm doing and what the docs tell me to do. Despite that, the waterfall and the warning are still there.

Reproduction

https://stackblitz.com/edit/svelte-waterfall-warning-repro?file=src%2Froutes%2F%2Bpage.svelte

Open the preview in new tab, so that you can see the console warning and the waterfall in devtools.

Logs

[svelte] await_waterfall (+page.svelte:7)
An async derived, `quotes` (src/​routes/​+page.svelte:7:14) was not read immediately after it resolved. This often indicates an unnecessary waterfall, which can slow down your app

System Info

(StackBlitz container)

System:
  OS: Linux 5.0 undefined
  CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
  Memory: 0 Bytes / 0 Bytes
  Shell: 1.0 - /bin/jsh
Binaries:
  Node: 20.19.1 - /usr/local/bin/node
  Yarn: 1.22.19 - /usr/local/bin/yarn
  npm: 10.8.2 - /usr/local/bin/npm
  pnpm: 8.15.6 - /usr/local/bin/pnpm
npmPackages:
  svelte: ^5.38 => 5.38.0

Severity

blocking an upgrade

[dangodai]

Seems to be a duplicate of #16483

[dummdidumm]

Closing as duplicate of #16483