plan mode skip AGENT.md

What version of Codex is running?

0.91.0

What subscription do you have?

chatgpt plus

Which model were you using?

gpt 5.2

What platform is your computer?

Darwin 25.3.0 arm64 arm

What terminal emulator and version are you using (if applicable)?

iterm2

What issue are you seeing?

Based on my own usage, when I use plan mode—i.e., running the /collab command and selecting “plan”—Codex skips reading the AGENT.md file.
Evidence: In AGENT.md, I instructed it to output the sentence “AGENT.md file has been read” after each reading, and I explicitly required all responses to be in Chinese. Neither of these rules is enforced in plan mode.

What steps can reproduce the bug?

1. edit ~/.codex/config.toml , add following

[features]
collab = true
collaboration_modes = true

1. running the /collab command and selecting “plan"

What is the expected behavior?

_No response_

Additional information

_No response_