The GNOME project has updated its review guidelines to reject GNOME Shell extensions that contain code generated by large language models, after reviewers saw a surge of submissions that appeared to be produced by AI tools. The new rule states that while developers may still use AI for learning or lightweight assistance such as code completion, they must fully understand and be able to explain the code they submit. Reviewers will now treat signs like oversized, unnecessary logic, mismatched coding styles, fabricated APIs, or leftover prompt comments as indicators that an extension was produced by an automated system and should be rejected. GNOME maintainers frame the change as a way to keep the extensions ecosystem safe, maintainable, and welcoming to responsible contributors rather than a blanket rejection of AI as a development aid.