#Reproducible Issue: GPT-5.2 Uses Outdated Files in Long .NET Coding Sessions

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fierce orioleBOT
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Reported by @tacit fiber

Bug Report: Reproducible Issue: GPT-5.2 Uses Outdated Files in Long .NET Coding Sessions
`Steps to Reproduce`

  1. Start a new chat using GPT-5.2 (Auto).

  2. Upload multiple C#/.NET project files and begin an extended coding session (2–4+ hours).

  3. Iteratively update files, logic, and architecture — providing the model with updated versions over time.

  4. Continue asking the model to generate fixes, enhancements, or refactors based on the most recent version of the code.

  5. After several hours, request that the model reference or modify the same files again.

`Expected Result`

The model should treat the most recent versions of uploaded files and instructions as the current source-of-truth and continue building on those updates.

`Actual Result`
  • The model begins referencing older versions of files from the beginning of the session after 3+ hours.
  • It generates code and “fixes” based on these outdated files.
  • More recent changes, logic, and structure are ignored.
  • The model appears to anchor itself to the earliest file versions and treats them as authoritative.
  • This behavior persists within the chat, even when repeatedly corrected.
  • Starting a chat without deleting the old one retains drift.
`Environment`

Model: GPT-5.2 (Auto mode) Platform: ChatGPT Windows Desktop & Browser versions

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Additional Information

Please provide relevant details to help resolve the issue, such as:

  • ChatGPT Shared Link (if applicable).
  • Screenshots or videos demonstrating the problem.

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tacit fiber
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I have deleted those old chats. I'll continue working and as it becomes corrupted again, I'll share a link along with demonstrations. I do have a photo I took last night prior to deleting the chat though.

image.png
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The chat started to get hostile after this point and I eventually cursed at it, and deleted the chat. 😄 I know, that's not going to solve anything. But it was quite frustrating being I would send the zip that it was parsing just fine hours prior then it started saying files weren't in the zip. It then showed me the zip layout it was referencing and it was the original zip I gave it 3 hours prior. It then stated I was wrong and the zip I provided was the one it was referencing.

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Anyhow this has been going on for a few weeks now. A few projects I have been working on with it I have been noticing this. My Zolian MMO, where I have optimized networking socket logic. My SQL Server database stored procedures, SeaGlass, and also my NPC Generator. All have seen regression/hallucination/drift. However you want to call it.