LayoutServerLoad not re-fetched when page without PageServerLoad is invalidated

[HalfdanJ]

Describe the bug

In a simple project where theres a +layout.server.ts file and a +page.svelte, calling invalidate() doesn't re-trigger fetching the page data from +layout.server.ts again.

If an "empty" +page.server.ts file is added, then the data does get re-fetched when invalidated, including the data from +layout.server.ts.

I was able to determine that this was a regression in sveltekit 432 (#6174)

Reproduction

Reproduction example: https://stackblitz.com/edit/sveltejs-kit-template-default-voqrk9?file=src/routes/+page.svelte

The date shown in the example comes from +layout.server.ts. Every time invalidate button is clicked, it should show a new date, and re-fetch __data.json, but data is never fetched and the date doesn't update.

If a +page.server.ts file is added returning an empty object, then it does fetch new data when invalidated.

Changing the version of sveltekit to 431 in the example above solves the issues.

Logs

No response

System Info

System:
    OS: macOS 12.5
    CPU: (10) arm64 Apple M1 Pro
    Memory: 79.30 MB / 16.00 GB
    Shell: 5.8.1 - /bin/zsh
  Binaries:
    Node: 16.13.2 - ~/.nvm/versions/node/v16.13.2/bin/node
    Yarn: 1.22.19 - ~/.yarn/bin/yarn
    npm: 8.1.2 - ~/.nvm/versions/node/v16.13.2/bin/npm
  Browsers:
    Chrome: 104.0.5112.101
    Firefox: 103.0.2
    Safari: 15.6
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.66 
    @sveltejs/kit: next => 1.0.0-next.435 
    @sveltejs/package: next => 1.0.0-next.1 
    svelte: ^3.44.0 => 3.49.0 
    vite: ^3.0.0 => 3.0.9

Severity

serious, but I can work around it

Additional Information

No response

[HalfdanJ]

Looks very similar as the issue in #6257 that was posted around same time

[DePasqualeOrg]

I'm also having problems with invalidate() not updating the data from LayoutServerLoad, which started appearing sometime after the migration away from session. It looks like the layout's load function is running after calling invalidate, but the values in $page.data aren't always being updated.

[CaptainCodeman]

I think this may be the same #6269

For me, it works if I'm on a different page, not the same route as the +layout.server file. And the +page loaded data updates, just not the root layout stuff (e.g. session)