WP Preview doesn't work with the filesystem route api

For me neither published posts or drafts ever load when selecting preview from WP. Drafts throw this message:

Published posts basically time out. Tyler I believe you have access to my site to check things out, let me know if you have questions.

If you browse to the preview site directly published posts work fine. Drafts do appear on archive pages but the preview URL is broken: https://preview-moonmeisternet.gtsb.io/generated-preview-path/post/7176/

The only thing somewhat unique about my site that I can think of is the fact that I use the newish file-system routing API for posts.

  System:
    OS: Linux 4.4 Ubuntu 20.04.1 LTS (Focal Fossa)
    CPU: (8) x64 Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz
    Shell: 5.0.17 - /bin/bash
  Binaries:
    Node: 14.15.3 - /tmp/yarn--1608653875235-0.10626545320667291/node
    Yarn: 1.22.10 - /tmp/yarn--1608653875235-0.10626545320667291/yarn
    npm: 6.14.9 - ~/.nvm/versions/node/v14.15.3/bin/npm
  npmPackages:
    gatsby: ^2.29.1 => 2.29.1
    gatsby-image: ^2.8.0 => 2.8.0
    gatsby-plugin-feed: ^2.10.0 => 2.10.0
    gatsby-plugin-goatcounter: ^0.4.0 => 0.4.0
    gatsby-plugin-linaria: ^2.2.0 => 2.2.0
    gatsby-plugin-manifest: ^2.9.0 => 2.9.0
    gatsby-plugin-netlify: ^2.8.0 => 2.8.0
    gatsby-plugin-offline: ^3.7.0 => 3.7.0
    gatsby-plugin-postcss: ^3.4.0 => 3.4.0
    gatsby-plugin-preact: ^4.4.0 => 4.4.0
    gatsby-plugin-react-helmet: ^3.7.0 => 3.7.0
    gatsby-plugin-readingtime: ^1.0.1 => 1.0.1
    gatsby-plugin-robots-txt: ^1.5.3 => 1.5.5
    gatsby-plugin-sharp: ^2.11.1 => 2.11.1
    gatsby-plugin-sitemap: ^2.9.0 => 2.9.0
    gatsby-plugin-webpack-bundle-analyzer: ^1.0.5 => 1.0.5
    gatsby-plugin-webpack-size: ^1.0.0 => 1.0.0
    gatsby-source-filesystem: ^2.8.0 => 2.8.0
    gatsby-source-wordpress-experimental: * => 6.0.0
    gatsby-transformer-sharp: ^2.9.0 => 2.9.0

[TylerBarnes]

Hey @moonmeister , thanks for raising this. It looks like the problem is the filesystem route api only calls onCreatePage when initially creating pages and then never again when updating pages. We will need a fix in Gatsby core for this to work.

[LekoArts]

Hi!

I’m closing this as a stale issue as in the meantime Gatsby 4 and related packages were released. You can check our Framework Version Support Page to see which versions currently receive active support. If this is a feature request, please create a discussion as we moved feature requests from issues to GitHub Discussions.

Please try the mentioned issue on the latest version (using the next tag) and if you still see this problem, open a new bug report. It must include a minimal reproduction.

Thanks!