[BUG] Usage indicator flickers between inconsistent percentages across multiple sessions

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?

Description:
The usage percentage display in the Claude Code corner shows intermittent flickering with randomly changing values (e.g., 23% ↔ 93%). This behavior:

• Occurs across multiple Claude Code terminal sessions simultaneously
• Is non-deterministic and intermittent (flickering on and off)
• Persists even after auth refresh (/upgrade)

Possible causes:

• Backend usage API returning inconsistent values
• Cross-session state sync issue
• Auth/token validation affecting display

This is reproducible across multiple independent sessions, suggesting a systemic issue rather than a local glitch.

What Should Happen?

It should show my actual usage at a point in time

Error Messages/Logs

Steps to Reproduce

simply running a session

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code v2.1.112

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

IntelliJ IDEA terminal

Additional Information

_No response_