Codex session abruptly closed with context window ran out of room error

Question

### What version of the Codex App are you using (From “About Codex” dialog)?

26.513.31313 (2867)

### What subscription do you have?

Pro

### What platform is your computer?

Darwin 25.3.0 arm64 arm

### What issue are you seeing?

Codex ran out of room in the model's context window. Start a new thread or clear earlier history before retrying

### What steps can reproduce the bug?

My Codex session was abruptly stopped with 'Codex ran out of room in the model's context window. Start a new thre