VS Code extension: AskUserQuestion modal hides assistant text written before the tool call

Environment

• Claude Code VS Code extension (native extension environment)
• macOS (Darwin 25.5.0)
• Observed 2026-07-01/02, model claude-fable-5

Bug

When the assistant writes explanatory text and then calls the AskUserQuestion tool in the same turn, the question modal appears but the preceding text message is never shown — not before the modal, and not in the chat transcript afterward. The user sees only the question dialog.

Impact

The assistant's pattern of "explain the options, then ask" silently breaks: the user answers questions without ever seeing the explanation. In one working session this happened three separate times — the user repeatedly answered "I don't understand the options / you didn't show me any examples," because multi-paragraph explanations written immediately before the AskUserQuestion call were swallowed. The assistant had no signal the text wasn't rendered.

Repro

1. In the VS Code extension, get the assistant to produce a turn of the form: [several paragraphs of text] followed by an AskUserQuestion tool call (this is the natural shape whenever it explains options before asking).
2. Observe the question modal appears but the paragraphs are not visible in the chat window, and do not appear after answering.

Expected

Text emitted before AskUserQuestion should render in the chat window before (or alongside) the question dialog, and remain in the transcript.

🤖 Filed via Claude Code on the user's behalf