Failure to respond prompt and repeat previous output

What version of Codex CLI is running?

codex-cli 0.121.0

What subscription do you have?

pro

Which model were you using?

gpt-5.4

What platform is your computer?

Linux 6.11.0-17-generic x86_64 x86_64

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

_No response_

What issue are you seeing?

Failure to respond prompt and repeat the previous output

<img width="1616" height="1095" alt="Image" src="https://github.com/user-attachments/assets/264a1c5e-8e56-488d-9392-7bd1c9dc5427" />

What steps can reproduce the bug?

not predictable

What is the expected behavior?

_No response_

Additional information

_No response_