[BUG] Max 5x: usage counter increments with zero active sessions — all auth revoked, no Claude Code running

Preflight Checklist

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

What's Wrong?

With all sessions logged out, all API keys revoked from console.anthropic.com, and Claude Code not running (no terminal, no VS Code extension), the usage counter on claude.ai Settings > Usage continues to increment on its own.

This is distinct from fast session depletion during active use. The counter rises autonomously with zero authenticated client activity, suggesting a server-side process is consuming quota against this account without any client-initiated request.

Additionally experiencing 4 simultaneous anomalies since March 23, 2026:

1. Session limit hits 100% after only 1-2 prompts (Max 5x plan)
2. Usage counter rises while completely idle (all auth revoked)
3. Claude Code /usage reports 100% while claude.ai dashboard shows significantly lower % simultaneously
4. Rate limit state remains stuck after the reset window elapses — re-login does not resolve it

What Should Happen?

• Usage counter should NOT increment when no authenticated session is active
• The 5-hour session window should deplete proportionally to actual token usage
• Usage percentage should be consistent across Claude Code (/usage) and claude.ai dashboard simultaneously
• Rate limit state should clear automatically after the reset window elapses

Error Messages/Logs

Claude AI usage limit reached, please try again after [reset time]

From Claude Code /usage:
  Current session: 100% used (all models blocked)

From claude.ai Settings > Usage (same moment, same account):
  Session usage: significantly below 100%
  Web interface still functional

Steps to Reproduce

1. Note current usage % on claude.ai Settings > Usage
2. Log out all sessions (browser + mobile)
3. Go to console.anthropic.com > API Keys > revoke all keys
4. Close all Claude Code terminals and VS Code windows
5. Wait 10-15 minutes
6. Re-open claude.ai Settings > Usage
7. Observe: usage % has increased despite zero activity

To reproduce the desync:

1. Open Claude Code > run /usage > note session %
2. Simultaneously open claude.ai Settings > Usage
3. Observe: two different percentages on same account at same time

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Unknown — last confirmed normal behavior: March 22, 2026

Claude Code Version

Not installed — using Claude via claude.ai web interface (Max 5x plan). Bug occurs on web dashboard usage counter, not CLI. Latest Claude Code version as of March 2026: 2.1.81

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

Regression onset: March 23, 2026. No changes made on user side.

This idle counter increment anomaly is NOT covered by existing issues:

• #38335 covers fast depletion during active use only
• #16157 covers general limit exhaustion
• #24335 covers Claude Code vs claude.ai desync

Hypothesis:

1. Ghost/zombie session not fully invalidated server-side on logout
2. Backend polling or telemetry process attributed to wrong account
3. Session token not propagating invalidation to usage counter service

Plan: Max 5x ($100/mo) | Timezone: Asia/Jakarta (WIB, UTC+7)
Related issues: #16157, #24335, #38335, #38345