Raw transcript markers (role prefixes, <total_tokens> tags) rendered in the chat view

What happened

The chat view rendered internal transcript text as if it were part of the assistant's message. Immediately after an assistant message ended, this appeared inline, styled the same as the message body:

user응 눌러

system<total_tokens>15000000 tokens left</total_tokens>

응 눌러 was my own previous reply, but it was shown glued to the user role marker inside the assistant's bubble, along with a <total_tokens> system tag that should never be visible at all.

Expected

Role markers and system tags are stripped; each turn renders in its own bubble.

Context

• Long session (several hours, many tool calls), heavy use of the claude-in-chrome MCP for browser automation
• The assistant was mid-turn when this was visible (spinner showed "Claude 응답 대기 중…")
• macOS (darwin 25.6.0)

Screenshot attached in a comment below.