[BUG] UI Layout Shifts on Every Keystroke

Environment

• Platform (select one):
• [-] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.61
• Operating System: Ubuntu 24.04
• Terminal: MobaXterm in PC and Termux in Android

Bug Description

<!-- A clear and concise description of the bug -->
Title: Mobile UI Layout Shifts on Every Keystroke
Description: Claude Code interface has severe layout jumping/shifting on MobaXterm in PC and Termux in Android mobile when typing. Content bounces up/down
on every character input and during updates.

Video www.satybaldin.kz/1.mp4 and www.satybaldin.kz/2.mp4

Steps to Reproduce

1. <!-- First step -->
2. <!-- Second step -->
3. <!-- And so on... -->

Expected Behavior

<!-- What you expected to happen -->

Actual Behavior

<!-- What actually happened -->

Additional Context

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