File Upload not validating in version 2 docs

[eftichis0202]

Description
After migrating to v2, the file upload stopped working. I then went through the docs and copied the exact same code as in the Single File Upload Doc example, and the validation keeps failing on the server side. I don't know how to solve this if even the example from the official superform docs doesn't work..

here are the versions of the dependencies i am using in my stack:

schema & server side

// NOTE: Import fail from Superforms, not from @sveltejs/kit!
import { superValidate, fail, message } from 'sveltekit-superforms';
import { zod } from 'sveltekit-superforms/adapters';
import { z } from 'zod';

const schema = z.object({
  image: z
    .instanceof(File, { message: 'Please upload a file.'})
    .refine((f) => f.size < 100_000, 'Max 100 kB upload size.')
});

export const load = async () => {
  return { 
    form: await superValidate(zod(schema))
  }
};

export const actions = {
  default: async ({ request }) => {
    const form = await superValidate(request, zod(schema));

    if (!form.valid) {
      return fail(400, { form });
    }

    // TODO: Do something with the image
    console.log(form.data.image);

    return message(form, 'You have uploaded a valid file!');
  }
};

frontend:

<script lang="ts">
  import { superForm, fileProxy } from 'sveltekit-superforms'
  import { zodClient } from 'sveltekit-superforms/adapters'
  import { schema } from './schema.js'

  let { data } = $props();

  const { form, enhance, errors } = superForm(data.form, {
    validators: zodClient(schema)
  })

  const file = fileProxy(form, 'image')
</script>

<form method="POST" enctype="multipart/form-data" use:enhance>
  <input
    type="file"
    name="image"
    accept="image/png, image/jpeg"
    bind:files={$file}
  />
  {#if $errors.image}<span>{$errors.image}</span>{/if}
  <button>Submit</button>
</form>

[eftichis0202]

Using superdebug, this is when i chose the file:

and when i submit:

[eftichis0202]

After 3 days of trial and error I found the issue - I had

+  define: {
+    SUPERFORMS_LEGACY: true
+  }