Codex App [bug]: on MacOS, Control+B toggles sidebar while typing in Quick Chat

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

26.715.31925 (build 5551)

What subscription do you have?

Not provided

What platform is your computer?

Darwin 24.6.0 arm64 arm

What issue are you seeing?

When the Quick Chat composer has keyboard focus, pressing Control+B is handled as the app-level sidebar toggle. The sidebar is shown or hidden instead of allowing the focused text field to process the key event.

This conflicts with the standard macOS text-editing binding, where Control+B moves the insertion point back one character. It makes cursor navigation unreliable while composing a Quick Chat message.

What steps can reproduce the bug?

1. Open the Codex App and start a Quick Chat.
2. Click in the message composer and enter a few characters, for example abc.
3. Leave the insertion point in the composer.
4. Press Control+B.
5. Observe that the sidebar visibility changes rather than the insertion point moving one character to the left.

What is the expected behavior?

A focused Quick Chat composer should receive Control+B as its normal text-editing shortcut and move the insertion point back one character.

The sidebar visibility shortcut should be bound only to Command+B, so it does not override editing shortcuts in active text inputs.

Additional information

The behavior occurs specifically while entering text in Quick Chat.