Describe the bug

I just wanted to give the new mutable deriveds a try and did a simple test:

let thing = $derived(state); // or just $derived('old')
thing = 'new';

However, in the output, I still see the old value, not the updated one.

Note: this works

let thing = $derived('old');
Promise.resolve().then(() => { thing = 'new' });

UPDATE: If you put a console.log before the reassignment, then it starts working.

Reproduction

https://svelte.dev/playground/f447b4a9ec5d4271a9d1b187ab91a560?version=5.25.2

Logs

System Info

not relevant

Severity

annoyance