Does a calm bug report count as frustration?
No, a calm bug report reads as neutral: the frustration classifier only flags messages that carry annoyance, anger, or disappointment in the words themselves, and a flat, matter-of-fact description of a problem doesn’t.
The neutral label explicitly covers calm, curious, or positive messages, including a bug report with no emotional charge in it. “My export button returns a 500” and “why does your export button still not work” describe the same failure, but only the second carries the tone the classifier is built to catch.
This is deliberate, not a blind spot. Frustration and severity are different signals: a calm bug report can point at a critical failure, and a furious message can be about something trivial. Conflating the two would make the classifier redundant with error-rate monitoring, which already catches thrown exceptions and failed tool calls. What it adds is visibility into agents that are technically working but making people miserable anyway, and that only shows up in how people write, not in what broke.