"Go Home Copilot, You're Drunk": Understanding Developer Responses to Agent-Generated Code Review Comments

Code review is a critical quality assurance practice in software engineering development, and AI coding agents are increasingly generating review comments on pull requests. However, little is known about how developers actually respond to such agent-generated feedback. In this paper, we present the first large-scale empirical study on the resolution of agent-generated code review comments. We analyze 54,791 comments generated by five widely used coding agents (i.e., Copilot, Cursor, Codex, Devin, and Claude) across 342 Python repositories on GitHub. We examine (1) resolution rates across agents and comment types, (2) the role of developer experience, and (3) characteristics that influence comment usefulness. Our results show that resolution rate varies considerably across agents, with Copilot accounting for the majority of resolved comments (72.9%). Core developers resolve the majority of agent-generated feedback, particularly for textitdesign and textitevolvability-related comments, while peripheral developers are more involved in resolving textitfunctional defect comments. Through open card sorting of 470 unresolved comment discussions, we identify textitten discussion patterns explaining why comments remain unresolved, with textitincorrect suggestions and textitintentional design decisions being the most prevalent. Finally, our analysis reveals that the presence of an inline textitcode suggestion is the strongest predictor of comment resolution, while lengthy and complex comments are less likely to be acted upon. Our findings provide insights for improving AI-generated code review feedback and its integration into development workflows.