[BUG] he /context command displays incorrect and inconsistent information about context window usage:

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?

The /context command displays incorrect and inconsistent information about context window usage:

1. Mismatch with actual usage: Sometimes shows 0k/200k when the visual indicator clearly shows ~50% tokens consumed
2. Random percentages: The percentage shown varies unpredictably and doesn't correlate with actual context consumption
3. Breakdown doesn't add up: The sum of individual context components (system prompt, conversation, tool results, etc.) doesn't match the reported total

Expected behavior

• The total usage shown should match the visual progress indicator
• Individual component sizes should sum to the reported total
• Values should accurately reflect actual token consumption in the context window

Environment

• OS: macOS (Darwin 25.3.0)
• Claude Code version: 2.1.74
• Model: Claude Opus 4.6

What Should Happen?

I'm expecting correct number to be showin in /context command. 😿

Error Messages/Logs

No error message

Steps to Reproduce

Steps to reproduce

1. Start a Claude Code session and work through several tool calls
2. Run /context
3. Compare the reported numbers with the visual context indicator
4. Note the discrepancy between component breakdown and total

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.74

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

This is flaky, sometime it works, sometime it doesn't