docs: defaultChecked should not be used with form remote functions #14707
Description
Describe the bug
<script lang="ts"> import { FormSchema } from './ids'; import { addId } from './ids.remote'; </script> <form {...addId.preflight(FormSchema)}> <fieldset> {#each ['windows', 'mac', 'linux'] as os, index} <label> <!-- windows is not checked --> <input {...addId.fields.operatingSystem.as('radio', os)} defaultChecked={!index} /> {os} </label> {/each} </fieldset> <fieldset> {#each ['windows', 'mac', 'linux'] as os, index} <label> <!-- windows is checked --> <input type="radio" name="os" value={os} defaultChecked={!index} /> {os} </label> {/each} </fieldset> </form>Happens on both Firefox and Chrome.
<form method="POST" action="?/remote=14dkmo%2FaddId"> <fieldset> <!-- dev tools shows that it is checked, but the UI does not reflect this --> <label><input name="operatingSystem" type="radio" value="windows" checked="" /> windows</label ><label><input name="operatingSystem" type="radio" value="mac" /> mac</label ><label><input name="operatingSystem" type="radio" value="linux" /> linux</label> </fieldset> <fieldset> <label><input type="radio" name="os" value="windows" checked="" /> windows</label ><label><input type="radio" name="os" value="mac" /> mac</label ><label><input type="radio" name="os" value="linux" /> linux</label> </fieldset> </form>Reproduction
https://github.com/hyunbinseo/svelte-kit-template/tree/mre-kit-14707
Logs
System Info
System: OS: Windows 11 10.0.26100 CPU: (8) x64 Intel(R) Core(TM) Ultra 7 258V Memory: 3.51 GB / 31.48 GB Binaries: Node: 24.10.0 - C:\Users\hyunb\AppData\Local\fnm_multishells\24580_1760341048510\node.EXE Yarn: 1.22.22 - C:\Users\hyunb\AppData\Local\fnm_multishells\24580_1760341048510\yarn.CMD npm: 11.6.1 - C:\Users\hyunb\AppData\Local\fnm_multishells\24580_1760341048510\npm.CMD pnpm: 10.18.2 - C:\Users\hyunb\AppData\Local\fnm_multishells\24580_1760341048510\pnpm.CMD Deno: 2.4.0 - C:\Users\hyunb\.deno\bin\deno.EXE Browsers: Chrome: 141.0.7390.76 Edge: Chromium (140.0.3485.54) Firefox: 143.0.4 - C:\Program Files\Mozilla Firefox\firefox.exe npmPackages: @sveltejs/adapter-auto: ^6.1.1 => 6.1.1 @sveltejs/kit: ^2.46.5 => 2.46.5 @sveltejs/vite-plugin-svelte: ^6.2.1 => 6.2.1 svelte: ^5.39.11 => 5.39.11 vite: ^7.1.7 => 7.1.7Severity
blocking an upgrade
Additional Information
No response