Observed behaviour
The JavaScript and Python code has the same color as the Plain block code.
In the console, there are errors with ArboriumHighlighting failing to load grammar files for JS and Python.
Note: Markdown parsing fails outside of the Design System with other languages but is easiest to reproduce with the Design System.
Reproduction steps
- Go to Settings -> Design System
- Scroll down to Code Blocks under the Markdown section.
Build information
canary build 586 (96d2f9a), Electron 41.2.2, macOS 15.5.0 (arm64), desktop canary 0.0.122, locale en-US
macOS Sequoia
canary build 586 (96d2f9a), Electron 41.2.2, Linux 6.19.10-061910-generic (x64), desktop canary 0.0.122, locale en-US
Kubuntu 25.10 (KDE Plasma, Wayland)
canary build 586 (96d2f9a), Electron 41.2.2, Windows 11 10.0.26100 (x64), desktop canary 0.0.122, locale en-US
Windows 11 24H2
canary build 586 (96d2f9a), Chrome 147.0.0.0, Android 10 (Linux armv81), locale en-US
PWA (Pixel 7a running Android 16)
Platform
macOS, Windows
Evidence
screenshot with errors in console
Details
Expected behaviour
The JavaScript and Python code should have colored text due to parsing.
Screenshot_2026-05-04_at_1.20.34_AM.png
1602×492 | 150 kB
3 comments
Comment by Daffyduck
Comment by ternera
Comment by Jiralite