[BUG] Prompt editor keeps freezing while Claude is active on the previous prompt.

Environment

• Platform (select one):
• [ ] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [X] Other: MAX subscription
• Claude CLI version: 1.0.89
• Operating System: Ubuntu Linux
• Terminal: VSCode

Bug Description

I often start typing a new prompt while Claude is still active with the previous one. This is an extremely frustrating experience - it keeps freezing, backspace does not always work as expected, etc.