Why Kit builds my project two times even if I disabled ssr?

[frederikhors]

Describe the bug

I couldn't understand why Kit builds my project two times even if I disabled ssr in svelte.config.cjs:

vite v2.6.14 building for production...
...
vite v2.6.14 building SSR bundle for production...

Reproduction

https://github.com/frederikhors/iss-svelte-kit-tailwind-comments

Logs

> my-app@0.0.1 build
> svelte-kit build

vite v2.6.14 building for production...
✓ 28 modules transformed.
.svelte-kit/output/client/_app/assets/svelte-logo-87df40b8.svg             1.85 KiB
.svelte-kit/output/client/_app/manifest.json                               1.82 KiB
.svelte-kit/output/client/_app/pages/__layout.svelte-57ab7eca.js           4.04 KiB / gzip: 1.79 KiB
.svelte-kit/output/client/_app/error.svelte-0ebcf88e.js                    1.56 KiB / gzip: 0.75 KiB
.svelte-kit/output/client/_app/start-c23624a4.js                           18.75 KiB / gzip: 6.89 KiB
.svelte-kit/output/client/_app/pages/index.svelte-7be39bf6.js              3.62 KiB / gzip: 1.62 KiB
.svelte-kit/output/client/_app/pages/about.svelte-0cea0aea.js              2.29 KiB / gzip: 1.04 KiB
.svelte-kit/output/client/_app/pages/todos/index.svelte-d9cac2e2.js        5.48 KiB / gzip: 2.33 KiB
.svelte-kit/output/client/_app/assets/start-61d1577b.css                   0.16 KiB / gzip: 0.15 KiB
.svelte-kit/output/client/_app/chunks/vendor-836cc791.js                   14.11 KiB / gzip: 6.00 KiB
.svelte-kit/output/client/_app/assets/pages/__layout.svelte-fd9cb797.css   0.28 KiB / gzip: 0.19 KiB
vite v2.6.14 building SSR bundle for production...
✓ 31 modules transformed.
.svelte-kit/output/server/app.js                          0.10 KiB
.svelte-kit/output/server/chunks/app-32bc2016.js          51.76 KiB
.svelte-kit/output/server/chunks/index.json-784727b1.js   0.42 KiB
.svelte-kit/output/server/chunks/_api-e66b1c82.js         0.60 KiB
.svelte-kit/output/server/chunks/_uid_.json-039b6f30.js   0.41 KiB
.svelte-kit/output/server/chunks/__layout-d917862c.js     2.19 KiB
.svelte-kit/output/server/chunks/error-5c3307f4.js        0.75 KiB
.svelte-kit/output/server/chunks/index-b7efcc6a.js        6.08 KiB
.svelte-kit/output/server/chunks/about-950f4908.js        0.96 KiB
.svelte-kit/output/server/chunks/index-3b94195b.js        1.82 KiB

Run npm run preview to preview your production build locally.

> Using @sveltejs/adapter-static
  ✔ done

System Info

System:
    OS: Windows 10 10.0.19043
  Binaries:
    Node: 16.13.0 - C:\Program Files\nodejs\node.EXE
    npm: 8.1.4 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0), Chromium (96.0.1054.29)
  npmPackages:
    @sveltejs/adapter-static: 1.0.0-next.21 => 1.0.0-next.21
    @sveltejs/kit: 1.0.0-next.196 => 1.0.0-next.196
    svelte: 3.44.2 => 3.44.2

Severity

serious, but I can work around it