LaTeX Formulas Displayed as Raw Source Instead of Rendering in Chat

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1

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In Cursor Chat/Agent on Windows, LaTeX formulas in assistant responses cannot be displayed or rendered correctly. Instead of showing formatted mathematical expressions, Cursor displays the raw LaTeX source, including delimiters and commands such as […], \mathbf, and \frac. This issue has persisted across several recent Cursor versions and makes responses containing mathematical derivations difficult to read. The expected behavior is for supported LaTeX expressions to be rendered normally rather than displayed as plain source text. cursor:3.10.17 3.11 but3.10.11 is ok。so i thing it must be a new bug!!!

2

Hi there!

We detected that this may be a bug report, so we’ve moved your post to the Bug Reports category.

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Where does the bug appear (feature/product)?

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Version Information

  • For Cursor IDE: Menu → About Cursor → Copy
  • For Cursor CLI: Run agent about in your terminal
IDE:
Version: 2.xx.x
VSCode Version: 1.105.1
Commit: ......

CLI:
CLI Version 2026.01.17-d239e66

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  • Yes - Cursor is unusable
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  • No - Cursor works, but with this issue

The more details you provide, the easier it is for us to reproduce and fix the issue. Thanks!

6

Hey, thanks for the report and for sharing the version details. That really helps pinpoint the cause.

This is a known regression. Math LaTeX KaTeX still works in the chat, but in the new transcript renderer that rolled out around 3.10.17, math stopped rendering and showed up as raw source. That’s why everything was fine for you on 3.10.11, and why it broke on 3.10.17 and 3.11.

The fix is already merged and will ship in one of the next updates. Once you update to a version that includes it, formulas should render normally again. Let me know if the issue still happens after updating.

7

I can confirm this regression still reproduces in the **Editor layout** (not the Agents Window) while connected through Remote SSH.

Environment:

  • Cursor: `3.11.13`
  • Commit: `3f21b08f0b436a07be29fbfe00b304fa15553350`
  • Architecture: x64
  • Remote OS: Linux 6.1.128-136.201.amzn2023.x86_64
  • Model used: GPT-5.6 Sol

Reproduction:

  1. Open Agent chat in the Editor layout.
  2. Ask it to display `y^2 = 2px` as an equation.
  3. Responses using `\[y^2 = 2px\]`, `$$y^2 = 2px$$`, and `\(y^2 = 2px\)` all show their delimiters literally instead of rendering through KaTeX.

There is no custom CSS/JS loader or third-party theme installed. This confirms the new transcript-renderer issue persists in 3.11.13 and is not limited to the Agents Window.

8

Thanks, the confirmation with details is helpful, especially that it reproduces in the Editor layout and via Remote SSH, not just in the Agents Window.

This is the same known regression. In the new transcript renderer (added around 3.10.17), math stopped going through KaTeX and shows up as raw source. The fix is already merged, but it didn’t make it into 3.11.13 yet, so it still reproduces for you. It should arrive in one of the next updates.

Once you update to a version with the fix, formulas should render normally. Let me know if the issue still happens after the update.

11

Hey @Gina_Harris. Quick update on this issue: the fix is already out in the latest Cursor release. Please update to the latest version and formulas should render normally again. This was a regression caused by the new transcript renderer added around 3.10.17.

Let me know if the issue still reproduces after updating.

cc @Ruijiang_Li: this applies to you too. Updating to the latest version should fix the Editor layout + Remote SSH case.

12

Thanks @deanrie . Confirmed from my end, it is working now!