Array -> based on derived -> based on derived store -> from writable store is not updated

[pelmenept]

Describe the bug

I have a complex state, where I have comments, and display comments (derived store) and filtered comments (derived based on derived store), which when initial comments change, does not rerender, even though state seems to be correctly updated.

Reproduction

Here is bug in the playground. When you click on any of the "expand" state changes, but changes are not rendered

https://svelte.dev/playground/de0a9a04f0e84eef848db5994ddd5dea?version=5.2.11

Logs

No response

System Info

Svelte 5

Severity

annoyance

[pelmenept]

Figured it out, I needed to destructure comment and assign it to force update like so, I've left initial playground unchanged

export const commentExpand = (c) => {
	console.log("Function firing")
	comments.update((n) => {
		return n.map((x) => {
			if (x.id === c.id) {
				x = {...x, ...{expanded: !x.expanded}}
			}
			return x;
		})
	})
}