False positive of ownership_invalid_mutation after hot reload

[goldentoaste]

Describe the bug

In the example code, it seems to behave correctly, unless CounterDisplay.svelte content is changed to cause a vite module hot-reload. After the hot reload, every state change causes "ownership_invalid_mutation" warnings.

This particular issue is only reproducible locally, clone this repo to test it out.

+page.svelte
<script>
    import CounterDisplay from "./CounterDisplay.svelte";
    let counter = $state({
        count: 0,
    }); 
</script>

<CounterDisplay bind:counter></CounterDisplay>

CounterDisplay.svelte
<script>
	import Incrementer from "./Incrementer.svelte"
	let {counter = $bindable()} = $props()
</script>
<!-- Warning shows when this component is hot reloaded. For example added a new div here.  -->
<p>Counter is {counter.count}</p>
<Incrementer bind:count={counter.count}></Incrementer>

Incrementer.svelte
<script>
	let {count = $bindable()} = $props();
</script>

<button onclick={()=>{count += 1}}>Go up</button>

Reproduction

Reproducible in this repo.

1. Load root page to see counter working correctly, without warning
2. In CounterDisplay.svelte, make any html change, such as added a new div, in order to trigger a vite hot reload.
3. Further state change to the counter now raises ownership_invalid_mutation warning in browser console.

Logs

ownership_invalid_mutation 
src/routes/test/CounterDisplay.svelte mutated a value owned by src/routes/test/+page.svelte. This is strongly discouraged. Consider passing values to child components with `bind:`, or use a callback insteadlback instead
https://svelte.dev/e/ownership_invalid_mutation

System Info

System:
    OS: Windows 11 10.0.22631
    CPU: (16) x64 13th Gen Intel(R) Core(TM) i7-1360P
    Memory: 3.14 GB / 15.57 GB
  Binaries:
    Node: 22.1.0 - C:\Program Files\nodejs\node.EXE
    npm: 10.9.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.12.3 - ~\AppData\Roaming\npm\pnpm.CMD
  Browsers:
    Edge: Chromium (127.0.2651.98)
    Internet Explorer: 11.0.22621.3527

Severity

annoyance