Problem rendering underbrace in equation

[EinMaulwurf]

Bug description

In the following equation, the last underbrace is not rendered correctly:

$$
\underbrace{p}_{\substack{\text{Grenzerlös} \\ \text{MR}}} 
\leq 
\underbrace{ \frac{\partial c(y^*)}{\partial y} }_{\substack{\text{Grenzkosten} \\ \text{MC}}} 
\underbrace{=  \frac{\partial c_v(y^*)}{\partial y} }_{\text{kurzfristig}}
$$

Desired outcome (from RStudio inline view):

Actual outcome (rendered):

Steps to reproduce

Render the following quarto document:

---
format: revealjs
---

test

$$
\underbrace{p}_{\substack{\text{Grenzerlös} \\ \text{MR}}} 
\leq 
\underbrace{ \frac{\partial c(y^*)}{\partial y} }_{\substack{\text{Grenzkosten} \\ \text{MC}}} 
\underbrace{=  \frac{\partial c_v(y^*)}{\partial y} }_{\text{kurzfristig}}
$$

Expected behavior

No response

Actual behavior

No response

Your environment

• RStudio 2024.12.0,467
• Quarto 1.6.40
• MacOS 15

Quarto check output

❯ quarto check
Quarto 1.6.40
[✓] Checking environment information...
      Quarto cache location: /Users/sebastiangeis/Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.4.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.46.3: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.6.40
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /Library/TeX/texbin
      Version: 2024

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

[✓] Checking Python 3 installation....OK
      Version: 3.13.1
      Path: /opt/homebrew/opt/[email protected]/bin/python3.13
      Jupyter: (None)

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

[✓] Checking R installation...........OK
      Version: 4.4.2
      Path: /opt/homebrew/Cellar/r/4.4.2_2/lib/R
      LibPaths:
        - /opt/homebrew/lib/R/4.4/site-library
        - /opt/homebrew/Cellar/r/4.4.2_2/lib/R/library
      knitr: 1.49
      rmarkdown: 2.29

[✓] Checking Knitr engine render......OK

[cderv]

Please do have a look at

• some Latex symbols/annotation not displaying correctly with revaljs presentation  #6263

I believe this is a duplicate and related to

• [revealjs] Support for MathJax3 #4493

[EinMaulwurf]

Thank you. Especially this comment solved it.

However, I noticed that the rendering issue only seems to be the case when visiting the site with Chrome (or Chromium based browsers like Arc). With Firefox, it looked good. That's something I did not see mentioned in the other issues.

[mcanouil]

MathJax has some defaults settings change like accessibility display, etc. This is likely the reason.
Anyhow, that's not something related to Quarto or Reveal.js.