Quarto preview only works on first call/render on draft document (blank page otherwise)

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript
Domain
cli, web-dev

Research direction

Start by creating the blog with quarto create project blog website Website, adding draft: true to posts/post-with-code/index.qmd, and running quarto preview as described. Modify the draft and trace the preview refresh behavior; done means the draft continues to render instead of showing a blank page.

Written by the indexing model from the issue text.

Description

bug preview websites
Bug description

Quarto preview only works on first call/render on draft document.

Steps to reproduce
  1. Create a blog
quarto create project blog website Website

  1. Add draft: true to posts/post-with-code/index.qmd frontmatter.

  2. Preview the draft post

quarto preview posts/post-with-code/index.qmd
  1. Modify the draft post
Expected behavior

Quarto should still preview a draft even when modified.

Actual behavior

https://github.com/quarto-dev/quarto-cli/assets/8896044/9f8e7efd-d97d-4bbd-9564-f1bc25dbc802

Quarto check output

9724c3dd403d4e723bcb0a7e7bef6e49d23a353a

Quarto 99.9.9
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.2.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.41.0: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 99.9.9
      commit: 9724c3dd403d4e723bcb0a7e7bef6e49d23a353a
      Path: /Users/mcanouil/Projects/quarto/quarto-cli/package/dist/bin

Check file:///Users/mcanouil/Projects/quarto/quarto-cli/src/resources/vendor/deno-land/x/puppeteer@9-0-2/mod.ts
[✓] Checking tools....................OK
      TinyTeX: v2024.07.03
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /Users/mcanouil/Library/TinyTeX/bin/universal-darwin
      Version: 2024

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.12.4
      Path: /opt/homebrew/opt/python@3.12/bin/python3.12
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with python3 -m pip install jupyter

(|) Checking R installation...........ℹ R version 4.4.1 (2024-06-14)
! Config '~/.Rprofile' was loaded!
[✓] Checking R installation...........OK
      Version: 4.4.1
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/library
      knitr: 1.46
      rmarkdown: 2.26

[✓] Checking Knitr engine render......OK
Dominant language
JavaScript
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Avg merge
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Merged PRs (30d)
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