LaTeX/markdown math formulas not rendering in VSCode extension

Description

When Claude sends messages with LaTeX math formulas (both inline $...$ and display $$...$$ format), the formulas do not render — they appear as plain text.

Expected behavior

Math should render as formatted equations, as per CommonMark/markdown spec.

Actual behavior

Raw $...$ and $$...$$ strings display as-is, no MathJax/KaTeX rendering applied.

Environment

• Claude Code: VSCode native extension
• Model: Sonnet 5
• Issue reproducible: consistently (every math formula)

Steps to reproduce

1. Ask Claude a question requiring mathematical notation
2. Claude responds with formulas like $x = y^2$ or $$\mathcal{L} = ...$$
3. Observe: text appears literally, not rendered

Example

In conversation with Claude, dozens of LaTeX formulas are not rendering in the VSCode panel.