Last assistant message lost when terminal closed abruptly and session resumed

Environment

• Claude Code v2.1.23
• Windows 10/11
• Opus 4.5

Description

When closing the terminal window directly (clicking X) instead of graceful exit, then resuming the session with claude --resume or claude -c, the last assistant message is missing from the conversation history.

Steps to Reproduce

1. Have an active Claude Code session with multiple messages
2. Close the CMD/terminal window directly (X button)
3. Resume the session with claude --resume or claude -c

Expected Behavior

Full conversation history including last assistant message should be displayed.

Actual Behavior

Last assistant message is missing/truncated. Only user messages remain visible.

Additional Context

• Stop hooks were running when terminal closed (one had "bash not recognized" error on Windows)
• Large session transcripts (16MB+) may be more affected
• Issue occurred across multiple sessions
• The missing message was fully rendered on screen before terminal was closed
• Reproduced consistently across different sessions