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claude-code - 💡(How to fix) Fix [BUG] Welcome screen disappears instantly on startup [2 comments, 2 participants]

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anthropics/claude-code#54887•Fetched 2026-05-01 05:51:49
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Error Message

Error Messages/Logs

Root Cause

Root cause identified: The cachedGrowthBookFeatures field in .claude.json contains "tengu_swann_brevity": "focused", which appears to suppress the welcome screen. This value is assigned server-side and cannot be overridden locally — even a completely clean install (no .claude/ folder, no .claude.json) reproduces the issue, as the server sends the flag immediately on startup.

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Preflight Checklist

  • I have searched existing issues and this hasn't been reported yet
  • This is a single bug report (please file separate reports for different bugs)
  • I am using the latest version of Claude Code

What's Wrong?

Version: 2.1.124 OS: Windows 10 Pro Shell: PowerShell / CMD / VS Code (all same)

Issue: The full welcome screen (with Recent Activity and What's New panels) flashes for ~0.1 seconds on startup, then immediately collapses to a minimal one-line header.

Steps to reproduce:

  1. Open a new PowerShell terminal
  2. Run claude
  3. Welcome screen appears briefly (~0.1s) then disappears

Root cause identified: The cachedGrowthBookFeatures field in .claude.json contains "tengu_swann_brevity": "focused", which appears to suppress the welcome screen. This value is assigned server-side and cannot be overridden locally — even a completely clean install (no .claude/ folder, no .claude.json) reproduces the issue, as the server sends the flag immediately on startup.

What Should Happen?

Expected behavior: The welcome screen should remain visible until the user starts typing, as it did in v2.0.0.

Note: Other users on the same version do NOT experience this issue, suggesting this is an A/B test group assignment. Please consider adding an opt-out or reverting this behavior for the "focused" brevity group.

Error Messages/Logs

Steps to Reproduce

  1. Open a new PowerShell terminal
  2. Run claude
  3. Welcome screen appears briefly (~0.1s) then disappears

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

2.1.124

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

No response

extent analysis

TL;DR

The issue can be potentially resolved by waiting for the server-side flag to be updated or by requesting an opt-out from the "focused" brevity group.

Guidance

  • The cachedGrowthBookFeatures field in .claude.json contains the "tengu_swann_brevity" flag, which is assigned server-side and may be causing the welcome screen to collapse.
  • Try checking with the development team to see if there's an option to opt-out of the "focused" brevity group or if the behavior can be reverted.
  • If the issue is indeed caused by an A/B test group assignment, it may be resolved by waiting for the test to conclude or by being moved to a different test group.
  • Consider providing feedback to the development team about the unexpected behavior and its impact on user experience.

Notes

The issue seems to be related to a server-side flag and an A/B test group assignment, which makes it difficult to provide a definitive fix without more information from the development team.

Recommendation

Apply workaround: Request an opt-out from the "focused" brevity group or wait for the server-side flag to be updated, as this is likely the most straightforward way to resolve the issue without waiting for a potential update to the Claude Code version.

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claude-code - 💡(How to fix) Fix [BUG] Welcome screen disappears instantly on startup [2 comments, 2 participants]