Bug Report: MathJax Rendering on macOS ChatGPT

MathJax is not rendering ChatGPT responses correctly on macOS application (on Safari it works fine)
• Example:
MathJax \underbrace{…}_{…} expressions fail to render correctly in the macOS ChatGPT app.
• Steps to Reproduce:

  1. Open ChatGPT app on macOS.
  2. Let chatgpt echo message:
\[
\underbrace{a + \dots + a}_{n\text{ times}}
\]
  1. Send and view response.
    • Expected Result:
    The underbrace appears beneath the summed terms, with the label “n times.”
    • Actual Result:
    The underbrace label renders as plain text; the brace graphic is missing or misaligned.
    • Environment:
    • ChatGPT macOS app Version 1.2025.147 (1748653275)
    • macOS sequoia 15.5
    • Attachment:
    Screenshot showing missing underbrace (see attached).

Actual:

Expected:

Unlike the web version of ChatGPT (accessed via browsers like Safari), which renders LaTeX/Mathjax formulas correctly, the ChatGPT Mac app’s implementation is flawed. Many elements render incorrectly, making the feature unreliable and impractical on macOS.


LaTeX rendering issues on ChatGPT Mac app