[Bug] API usage incorrectly applied to multiple subscriptions during account switch

Bug Description
I have an addition to my previous feedback. Full story: My max subscription usage was nearing to its limit so I bought a second subscription, then looked for the spill over subscription setting (it was available before allowing us to register a second account to keep the sessions going) it is not available anymore. Consulted claude to find how to perform the switch over and we decided to change the login and worst case we will resume from the saved state. I left the session running with the same long session. Then in the morning I found out that the session was stopped because of usage quota. I have been using my primary subscription for the last 5+ days and this new subscription was exhausted in a matter of 6 hours. The interesting part is, it was showing my weekly fable allowance as 73% used and my session quota completely exhausted. Since sessions are 5 hours and this new subscription's session limit was over, it must have completed one full session quota and then maybe some overage. Which doesn't make sense, the primary account has been running longer than that without exhausting the session limit, ever. And fable 73% usage is even more puzzling, considering I had a single session with full quota, a weekly fable quota is 1.33 session quota? I believe my other subscription's part of the long session's usage was applied to my both accounts: First it exhausted the primary and then the same usage was applied to the backup subscription. I usually don't care about problems like this one, but today I had to deliver something important and I made the purchase just for the safety of it. However I got into the same blocked out sitation minus $200 from my pocket. This is not right.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.233
• Feedback ID: f0c0eb36-be03-4a1a-9144-3d476d01d936

Errors

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See https://github.com/anthropics/claude-code/issues/86943#issue-5160313386