Reported by @mortal drift
Go to chatgpt.com and start a completely new conversation with GPT-5.
Ensure the topic is unrelated to any recent or saved memory conversations (e.g., start with “Email spoofing explanation”).
Continue chatting normally.
Midway through, observe the model unexpectedly inserting highly specific references to unrelated, older conversations from months ago.
Confirm that the referenced information is not in saved memory.
In a new chat, the model should only reference information from the current conversation or explicitly stored memory. No unrelated context from other chats should appear.
While in a new conversation about email spoofing, the model suddenly injected details from completely unrelated past chats (including months-old topics such as identity theft), which were not in saved memory. This broke conversation context and raised privacy concerns.
macOS 11.7.10, ChatGPT web app (GPT-5), Chrome Version 138.0.7204.184