Shift+Enter no longer inserts a new line on macOS in Codex 0.128.0

What version of Codex CLI is running?

0.128.0

What subscription do you have?

plus

Which model were you using?

_No response_

What platform is your computer?

Darwin 25.4.0 arm64 arm

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

Ghostty

What issue are you seeing?

Bug report

On Codex version 0.128.0 on my MacBook, Shift+Enter no longer inserts a new line
in the prompt input.

Previously, pressing Shift+Enter allowed me to create a new line without submitting
the message. In the latest version, it behaves like Enter and submits the message
instead.

What steps can reproduce the bug?

1. Open Codex.
2. Type a message in the prompt input.
3. Press Shift+Enter.

What is the expected behavior?

Expected behavior

Shift+Enter should insert a new line in the input without submitting the message.

Actual behavior

Shift+Enter submits the message, same as pressing Enter.

Impact

This makes it difficult to write multi-line prompts, code snippets, or structured
instructions before sending.

Additional information

_No response_