[BUG] Session and weekly usage limits jump to a high percentage with no activity

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?

Hello,

I believe there is a usage accounting problem on my account and I'd like it investigated.

The issue:

1) Immediately after my five-hour session resets, the "Current session" value jumps straight to around 50% without me sending a single message. It is not a gradual increase — it goes up in one step.

2) The same happens with the weekly limit. When the weekly window renews, it does not start from zero but from an already high percentage.

In both cases I have no active usage at that moment: no new conversation, no messages sent, no background job running, and no other device or tab left open.

Account details:

• Name: Ahmet Balaman
• Account email: ahmetbalaman073@gmail.com
• Plan: [Pro / Max 5x / Max 20x]
• Primary surface: Claude Code (CLI) on macOS
• Date and time the jump was observed (UTC+3): [date/time]
• Screenshots attached: Settings > Usage, before and after the jump

Could you please review how usage is being metered on my account and explain why these percentages increase this way? If there is an accounting error, I'd appreciate it being corrected and the lost usage restored.

Thank you,
Ahmet Balaman

<img width="853" height="654" alt="Image" src="https://github.com/user-attachments/assets/853465e1-f24e-43de-af59-ac96f0eb69e1" />

What Should Happen?

Please fix it

Error Messages/Logs

Steps to Reproduce

Hello,

I believe there is a usage accounting problem on my account and I'd like it investigated.

The issue:

1) Immediately after my five-hour session resets, the "Current session" value jumps straight to around 50% without me sending a single message. It is not a gradual increase — it goes up in one step.

2) The same happens with the weekly limit. When the weekly window renews, it does not start from zero but from an already high percentage.

In both cases I have no active usage at that moment: no new conversation, no messages sent, no background job running, and no other device or tab left open.

Account details:

• Name: Ahmet Balaman
• Account email: ahmetbalaman073@gmail.com
• Plan: [Pro / Max 5x / Max 20x]
• Primary surface: Claude Code (CLI) on macOS
• Date and time the jump was observed (UTC+3): [date/time]
• Screenshots attached: Settings > Usage, before and after the jump

Could you please review how usage is being metered on my account and explain why these percentages increase this way? If there is an accounting error, I'd appreciate it being corrected and the lost usage restored.

Thank you,
Ahmet Balaman

<img width="853" height="654" alt="Image" src="https://github.com/user-attachments/assets/853465e1-f24e-43de-af59-ac96f0eb69e1" />

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.247

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_