Prompt suggestions not appearing despite being enabled

Description

Prompt suggestions (grayed-out text in the input field) do not appear despite the feature being enabled.

Steps to reproduce

1. Set CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION=true (environment variable)
2. Verify in /config that prompt suggestions toggle is ON
3. Start a new session with claude
4. No grayed-out suggestion text appears in the input field — not at session start, not after Claude responds

Expected behavior

A grayed-out suggestion should appear in the input field:

• At session start (based on git history)
• After Claude responds (based on conversation context)

As documented at https://code.claude.com/docs/en/interactive-mode#prompt-suggestions

Environment

• Claude Code version: 2.1.63
• OS: Windows 11 Pro (10.0.22631)
• Shell: bash (Git Bash)
• Terminal: VS Code integrated terminal

Related issues

This is a continuation of #14629 (closed by inactivity bot, never addressed by the team). Multiple users reported the same problem there:

• Config toggle not persisting after restart
• Suggestions not appearing despite being enabled

Duplicate references from #14629: #8500, #7927, #8632

The issue has been present since at least December 2025 and remains unresolved as of March 2026.