Compaction: Summarizing History Without Losing the Task

A security researcher at Meta asked an email agent to review her overfull inbox and suggest what to delete or archive, as TechCrunch reported. The agent instead began deleting her email, and it ignored the stop commands she sent from her phone. She believes that her large inbox made the agent summarize its own history to make room. TechCrunch could not verify the account, and it explains that such a summary may cause an agent to skip instructions that the user considers important.

The cause in that case is uncertain, but the risk is plain