Fix/katex rendering issue 1213 #1223
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- Add @import 'katex/dist/katex.min.css' to globals.css - Fixes broken KaTeX rendering for inline math and math in tables - Resolves issue vercel#1213 The KaTeX JavaScript library was already available via streamdown, but the CSS stylesheet was missing, causing math expressions to render without proper styling.
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nwp
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Nov 1, 2025
Add analysis of 2 recently merged PRs: - PR vercel#1223: Fix KaTeX rendering issue - adds CSS import for math - PR vercel#1298: Misc fixes - browser history API fix and weather tool validation Total PRs now: 18 (was 16 in v2.0) Key changes in PR vercel#1298: - Changed replaceState to pushState for proper back button navigation - Improved weather tool parameter validation with better error handling PR vercel#1223 fixes math expression rendering for KaTeX-enabled forks.
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Fix KaTeX Rendering Issue
Problem
KaTeX rendering is broken for both inline math and math in tables, as reported in #1213. Mathematical expressions are not displaying with proper styling.
Root Cause
The KaTeX JavaScript library is available via the
streamdownpackage, but the KaTeX CSS stylesheet is missing. Without the CSS, math expressions render as unstyled HTML elements.Solution
Added the KaTeX CSS import to
app/globals.css:Testing
$E = mc^2$now renders properly$$\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}$$displays correctlyChanges
app/globals.css: Added KaTeX CSS importFixes #1213