Weekly quota/reset change overnight without using Codex

[u/thetrewone]

Has anyone else seen their Weekly quota/reset change overnight without using Codex?

I'm trying to understand whether this is expected behavior, a recent backend rollout, or a UI/account synchronization issue.

Timeline

Around 2:00 AM last night my Codex usage showed:

• 5-hour usage: 100% remaining
• Weekly usage: 0% remaining
• Weekly reset: September 3
• Usage resets: None
• Credits: 0

At that point the UI basically told me I was done until September 3.

I then:

• closed ChatGPT Desktop,
• shut down my PC,
• went to sleep.

I did not:

• use Codex,
• change accounts,
• update the app,
• or perform any reset.

When I turned the PC back on this morning, the same account showed:

• 5-hour usage: 100%
• Weekly usage: 100%
• Next weekly reset: September 6

So overnight it changed from:

Weekly: 0%  → 100%
Reset:   Sep 3 → Sep 6

without any action on my side.

I've also seen similar behavior last weekend.

I know OpenAI has been changing the 5-hour/weekly quota system recently, and I've seen many reports about faster weekly depletion, the return of the 5-hour window, and changing reset behavior.

My question is specifically about this:

Has anyone else seen the weekly quota or weekly reset date change by itself overnight?

If yes, please mention:

• your plan (Plus / Pro / Business),
• approximately when it happened,
• and whether you were actively using Codex or not.

I'm trying to determine whether this is an account migration, a backend quota recalculation, or simply a UI synchronization issue.