Describe the bug

When you set the async and remote function experimental options to true the page content will cease to exist when you save a file if you have navigated elsewhere. This then requires you to manually refresh the page.

Reproduction

1. Startup the example REPO in dev mode
2. Add something to the home page markup and notice that HMR performs as expected.
3. Navigate to the view users page and then navigate back to the home page.
4. Add something to the homepage markup and save
5. Witness content disappear.
6. Go to the svelte config and disable everything regarding async/remote funcs
7. Restart the dev server
8. Add something to the home page, witness it work as expected.
9. Navigate to the users page and then back to the home page
10. Add something to the markup
11. Witness content and HMR work as expected.

Logs

No logs are output

System Info

System:
    OS: macOS 26.2
    CPU: (10) arm64 Apple M4
    Memory: 2.50 GB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 22.13.1 - /Users/a/.nvm/versions/node/v22.13.1/bin/node
    npm: 11.2.0 - /Users/a/.nvm/versions/node/v22.13.1/bin/npm
    pnpm: 10.20.0 - /Users/a/.nvm/versions/node/v22.13.1/bin/pnpm
    bun: 1.2.21 - /Users/a/.bun/bin/bun
  Browsers:
    Chrome: 142.0.7444.162
    Safari: 26.2
  npmPackages:
    svelte: ^5.43.8 => 5.43.14 
    @sveltejs/kit: => 2.48.5

Severity

annoyance