[BUG] Weekly usage reset changed unexpectedly after using newest Opus model

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?

My weekly Claude usage reset time appears to have changed unexpectedly after I used the newest Opus model.

What happened
Before using the latest Opus model, my weekly reset time showed as Saturday at 10:00 AM. After using the new Opus model earlier today, the reset time changed to Thursday at 1:00 PM.

I also checked other Claude apps, and they now show the same Thursday at 1:00 PM reset time, so this appears to be an account-level change rather than something limited to one app.

Actual behavior
The weekly reset time changed from Saturday 10:00 AM to Thursday 1:00 PM after using the newest Opus model.

Steps to reproduce

Use Claude normally with the existing weekly reset showing as Saturday at 10:00 AM
Switch to and use the newest Opus model
Check the usage/reset time afterward
Observe that the weekly reset now shows Thursday at 1:00 PM
Check other Claude apps and see the same updated reset time there

Notes

The change seems to have happened either immediately after using the newest Opus model or around Thursday.
I had not seen this behavior before using the latest Opus model.
I would like clarification on whether this is expected behavior, a change in how Opus usage windows work, or a bug.

What Should Happen?

Expected behavior
I expected my weekly usage reset time to remain the same unless there was a clearly explained account or plan change.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce

Use Claude normally with the existing weekly reset showing as Saturday at 10:00 AM
Switch to and use the newest Opus model
Check the usage/reset time afterward
Observe that the weekly reset now shows Thursday at 1:00 PM
Check other Claude apps and see the same updated reset time there

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_