[BUG] RTL (Persian/Farsi) text rendering broken in chat panel since v2.1.63

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

RTL (Right-to-Left) text rendering is broken in the Claude Code chat panel since v2.1.63. When typing Persian/Farsi (or any RTL language) in the chat input or reading RTL text in responses, the characters appear reversed (displayed left-to-right instead of right-to-left). This issue does not occur in v2.1.61. The VSCode editor and terminal render RTL text correctly — the problem is only in the Claude Code webview panel.

What Should Happen?

RTL languages (Persian, Arabic, Hebrew, etc.) should render correctly in the Claude Code chat panel — both in user input and in assistant responses — with proper right-to-left direction, as they did in v2.1.61.

Error Messages/Logs

Steps to Reproduce

Install Claude Code extension v2.1.63 on VSCode (Windows 11)
Open any project/workspace
Open the Claude Code chat panel
Type any RTL text (e.g., Persian/Farsi: سلام دنیا) in the chat input
Observe that the characters are rendered in reverse order (left-to-right instead of right-to-left)
Downgrade to v2.1.61 → RTL text renders correctly again

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

2.1.61

Claude Code Version

2.1.63

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_