Svelte 5: $derived in class not working for updated $state

[kuechlerm]

Describe the bug

I try to render the values of a $derived array or even the $derived of that. When the underlying value gets updated, this does not reflect in the $derived. I have two cases modeled in the REPL. Only one case can be "fixed" by using the values in an $effect.
To reproduce, please uncomment the console.logs in the $effect and change the CASE on the bottom.
I guess, it is related to the $derived property of the Store (s) class "d1", because CASE 3 and 4 work as expected.

Reproduction

https://svelte-5-preview.vercel.app/#H4sIAAAAAAAAE4WTUYubQBSF_8rtsLAKxmw0fTGJsJRSSmkLm0If1lBs5ro76WRGZq7ZFPG_l4naaLshgg_e-c517pwzNSuERMuSx5qpfI8sYfdlyQJGv0v3YQ8oCVnArK7M1lWWdmtESWmmMhL7UhuCWqvPulLUFEbvIetEGVsMGdtAtxxO12GLhDvbUiojiQQ8ghXccDTigNyzIZ-FhZCExjvCKoUjpBD5_lAQjwW5lJcULT8f8jy-CLv3BosCt-R5vlutT2WaTgGN0QYKbeDd_fo9zBbw_evDp49fPpxrUQ9vtbJaYij1k1fzWQJuqAB41PRjXGipNMGLNr-Eerra9kozyBW_sqO2ATXn4TtLPc9fpd3oNqxKnhP-OOSyQm8gWU7PoVBLLg7p-llXksNPhDiYB2-T5dRVT8tvJpMOareXQH1yeqeF8m6DW7_p4ckkHZJRAjWPXuEc-e8zFMZOGL8iPCPzS0imWMD2motCIGcJmQqb4O9d6YN8vjA7O7wsW5lbC2vSBtsA5VK6BFrKCb3HWRAF8aY9SD4bRpOexSjNuYtgPsr_2IzeI6RvYo-6GjmXUd8PVtD-1bmyad2mJoDo7q7zM1NNpvB4urQuKwQWVqDwpR3D8xf_H8im-QOexa2FSAQAAA==

Logs

No response

System Info

REPL

Severity

blocking an upgrade