Does the same happens if I create an AGENTS.md instead?
Claude Code does not support AGENTS.md, you can symlink it to CLAUDE.md to workaround it. Anthropic: pls support!
Use AGENTS.md for everything, then put a single line in CLAUDE.md:
@AGENTS.md
Claude Code does not support AGENTS.md, you can symlink it to CLAUDE.md to workaround it. Anthropic: pls support!