False assignment_value_stale warning when storing state in class and using bind:group

[Bladesheng]

Describe the bug

I am getting the assignment_value_stale warning when I store state in a class and then bind that state to group of checkboxes. According to the docs, I believe in this case the warning is not relevant and should not be printed.
Everything else works as expected though.

When the state is not stored in a class, there is no warning (correct).

When $state.raw([]) is used instead, there is also no warning.

This feels similar to #14643

Reproduction

https://svelte.dev/playground/59525517cbb8474ca7db39aacfa98586?version=5.11.2

Logs

▶
[svelte] assignment_value_stale
Assignment to `selectedOptions` property (App.svelte:19:14) will evaluate to the right-hand side, not the value of `selectedOptions` following the assignment. This may result in unexpected behaviour.
https://svelte.dev/e/assignment_value_stale
eval
playground:output:4148:47
untrack
playground:output:2696:11
console.warn
playground:output:4148:16
assignment_value_stale
playground:output:476:12
compare
playground:output:2819:4
assign
playground:output:2832:10
eval
playground:output:4104:18

System Info

Svelte 5.11.2, Rocky Linux, chrome, firefox

Severity

annoyance

[Leonidaz]

this is the same issue that I came across related to using a "workaround" for bind:group with the new syntax {get, set}.

via this comment: #14670 (comment)

Meanwhile, using state.raw gets rid of the warning.

[JonathanPicques]

This can be reproduced like this also:

https://svelte.dev/playground/af047dfa1b1b49239b5c66bdce47ee11?version=5.14.4