Multiple startup banner renders on Windows - Ink initializes 3 times

Description

On Windows, Claude Code displays the startup banner 3 times during a single launch. The debug log shows Ink (terminal UI) initializing multiple times within a single startup sequence.

Environment

• Claude Code version: 2.1.19
• OS: Windows 10 (10.0.26200.7623)
• Terminal: Windows Command Prompt (Administrator)
• Model: Opus 4.5

Evidence from debug log

Single launch shows 3 "first ink render" entries:

2026-01-26T17:26:58.551Z [render] first ink render: 417ms since process start
2026-01-26T17:26:58.646Z [render] first ink render: 517ms since process start
2026-01-26T17:26:59.108Z [render] first ink render: 978ms since process start

Each render displays the full startup banner, resulting in 3 banners visible in the terminal.

Steps to reproduce

1. Open Windows Command Prompt
2. Navigate to a project directory
3. Run claude
4. Observe 3 startup banners displayed

Expected behavior

Single startup banner displayed, single Ink initialization.

Actual behavior

Three startup banners displayed, three Ink initializations within ~600ms.

Additional context

• Settings are minimal (only statusline command configured)
• No hooks enabled
• No plugins enabled
• Debug log shows no crashes or errors related to this
• Screenshot available upon request