What version of Codex is running?

codex-cli 0.23.0

Which model were you using?

gpt5

What platform is your computer?

Darwin 24.6.0 arm64 arm

What steps can reproduce the bug?

When running the Codex client inside a Zellij session, the output history does not display correctly. Attempting to scroll within the Zellij pane shows truncated content instead of the full history. This makes it difficult to review previously generated output.

Steps to reproduce it:

cargo install zellij
zellij
codex

Then try scrolling back using Zellij’s scroll mode.

What is the expected behavior?

Scrolling in Zellij should display the full history of Codex output without truncation.

What do you see instead?

Scrolling only shows partial output — earlier content is cut off.

Additional information

No response