[BUG] Claude Stop Hook Output is pinned to the bottom of chat

Environment

• Platform (select one):
• [ ] Anthropic API
• [x] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.70 (Claude Code)
• Operating System: Linux 4.18.0-553.36.1.el8_10.x86_64
• Terminal: Windows Terminal | Tmux

Bug Description

If a stop hook exits with a non-blocking status code and output to stderr. That message is always pinned to the bottom of the chat even after you continue the conversation.

Steps to Reproduce

1. set up a Stop hook that exits with status code 1 and writes output to stderr

Expected Behavior

The output should be displayed but scroll up as part of the chat history and not always pinned to the bottom

Actual Behavior

The output and warning is pinned to the bottom even after new messages. This makes it really annoying to interact with. This also persists after closing claude and starting again with claude -c. The stop hook warning is still shown even though it's no longer relevant.

Additional Context

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