math equations not rendered #37326

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1. github-actions

   assigned

   Brendonovich

   on Jul 16, 2026
2. github-actions commented on Jul 16, 2026

   

   github-actionsBot

   on Jul 16, 2026 – with GitHub Actions

   Contributor

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   This issue might be a duplicate of existing issues. Please check:

   • Multiline display math ($$...$$) not rendered #34656: Multiline display math ($$...$$) not rendered — same symptom of math blocks appearing as plain text in Desktop
   • bug: math equations rendered as raw LaTeX source — agents not instructed to use KaTeX-compatible syntax #15053: Math equations rendered as raw LaTeX source — agents not instructed to use KaTeX-compatible syntax (same root cause area)

   If your issue is specifically about a different scenario, please clarify how it differs from the above.
3. logiczr commented on Jul 19, 2026

   

   logiczr

   on Jul 19, 2026

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   same in 1.18.3,can't render equation correctly.

   👍React with 👍1Reacted by moving-hawk
4. GraoMelo commented on Jul 20, 2026

   

   GraoMelo

   on Jul 20, 2026

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   @logiczr @xvkjbmj

   Do you have the same problem in Chrome?
   I don't know if you're aware, but Chrome runs on the OpenCode engine.
   Use the keys:
   Ctrl + Shift + I
   Enable DevTools mode and take a look:

   use the console:

   allow pasting: 
   
   navigator.userAgent
   
   

   'Mozilla/5.0 (yours.o; xxx; x64) AppleWebKit/537.36 (KHTML, like Gecko) OpenCode/1.18.3 Chrome/148.0.7778.218 Electron/42.3.3 Safari/537.36'

   is possible, try to use:
   https://www.mathjax.org/
5. 17-zh commented on Jul 21, 2026

   

   17-zh

   on Jul 21, 2026

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   Same issue in 1.18.4: equations are not rendered correctly. They were rendered correctly in 1.17.x, but stopped working after I upgraded via an in-place/overwrite installation.
   🤠🤠
   Markdown rendering still works normally; only LaTeX math such as $E=mc^2$ and $$E=mc^2$$ is displayed as raw text.

   👍React with 👍4Reacted by moving-hawk, logiczr, Robert Wong and 8Nothing8
6. rob-the-bot commented on Jul 23, 2026

   

   rob-the-bot

   on Jul 23, 2026

   Last edited by rob-the-bot

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   Same issue. I can confirm that LaTeX math still works in desktop app version 1.17.13 on Windows, but not later versions.
7. 8Nothing8 commented on Jul 23, 2026

   

   8Nothing8

   on Jul 23, 2026

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   As far as I can tell from the source code, opencode 1.18.4 can only render LaTeX in two ways:

   1. Inline math via \(...\)
   2. Block math via the explicit block format:

   $$
   ...
   $$
   

   Single-line $$...$$ and $...$ are no longer supported, which breaks the most commonly used LaTeX syntax across both user and assistant messages.

   ---

   You may be able to avoid this problem by including a formatting requirement in the prompt

   👍React with 👍4Reacted by Robert Wong, Chlorie, Encerebz and JazerJu
8. rob-the-bot commented on Jul 23, 2026

   

   rob-the-bot

   on Jul 23, 2026

   Last edited by rob-the-bot

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   As far as I can tell from the source code, opencode 1.18.4 can only render LaTeX in two ways:

   1. Inline math via \(...\)
   2. Block math via the explicit block format:

   $$
   ...
   $$
   

   Single-line $$...$$ and $...$ are no longer supported, which breaks the most commonly used LaTeX syntax across both user and assistant messages.

   You may be able to avoid this problem by including a formatting requirement in the prompt

   Thanks! Yep just confirmed that this works with the latest OpenCode Desktop app (version 1.18.4).

   @robPTY
9. github-actions commented on Sep 22, 2026

   

   github-actionsBot

   on Sep 22, 2026 – with GitHub Actions

   Contributor

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   To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
10. github-actions

    closed this as not plannedon Sep 22, 2026