Redirecting in RF after an error while using svelte boundary fails

[DarthGigi]

Describe the bug

I'm not sure if this is intended behavior or not, but it doesn't seem like it. Nor do I know if it is a Svelte or SvelteKit bug, my apologies if I made this issue in the wrong repository.

When triggering a redirect from a remote function (a query in this case) while an error was thrown and catched within a svelte boundary, the new remote function doesn't trigger nor redirect correctly (throws a 307 redirect but the data isn't refreshed).

The issue is a bit hard to explain, so I've added detailed steps to the reproduction linked below which can help understand the issue better.

Reproduction

https://github.com/DarthGigi/svelte-boundary-error-redirect-mvce

Logs

System Info

System:
    OS: macOS 26.3
    CPU: (14) arm64 Apple M4 Pro
    Memory: 12.59 GB / 48.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.13.1 - /opt/homebrew/opt/node@24/bin/node
    npm: 11.8.0 - /opt/homebrew/opt/node@24/bin/npm
    pnpm: 10.29.3 - /Users/gigi/Library/pnpm/pnpm
    bun: 1.3.9 - /opt/homebrew/bin/bun
    Deno: 2.6.9 - /opt/homebrew/bin/deno
  Browsers:
    Brave Browser: 144.1.86.148
    Firefox: 147.0.3
    Safari: 26.3
  npmPackages:
    @sveltejs/adapter-node: ^5.5.3 => 5.5.3 
    @sveltejs/kit: ^2.51.0 => 2.51.0 
    @sveltejs/vite-plugin-svelte: ^6.2.4 => 6.2.4 
    svelte: ^5.50.3 => 5.50.3 
    vite: ^7.3.1 => 7.3.1

Severity

serious, but I can work around it

Additional Information

No response