### What version of Codex is running? codex-cli 0.20.0 ### Which model were you using? gpt-5 ### What platform is your computer? Linux 6.14.9-arch1-1 x86_64 unknown ### What steps can reproduce the bug? It is common to use GPT-5 programming in daily life ### What is the expected behavior? Normal implementation of replacing text ### What do you see instead? <img width="3448" height="1914" alt="Image" src="https://github.com/user-attachments/assets/832399d9-9830-43c5-9bf8-2d28fdd03df9" /> ### Additional information _No response_