When Shift+Tab is configured to toggle plan mode, it requires two presses while the composer is focused

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

26.707.31428

What subscription do you have?

Pro

What platform is your computer?

Darwin 24.6.0 arm64 arm

What issue are you seeing?

When Shift+Tab is configured as the shortcut for toggling Plan mode, it does not work immediately while the composer is focused.

The first press of Shift+Tab moves focus away from the composer without switching modes. A second press is then required to activate Plan mode.

In other words, Shift+Tab can toggle Plan mode only after the composer has lost focus. It cannot toggle Plan mode directly while the user is editing a prompt.

I understand that the composer supports Markdown editing, so Tab and Shift+Tab may be used to indent or outdent list items. However, there should be a fallback when the cursor is not in a list: if Shift+Tab is configured as the Plan mode shortcut and no list outdent operation applies, the shortcut should toggle Plan mode.

What steps can reproduce the bug?

1. Open the Codex app.
2. Open the keyboard shortcut settings.
3. Assign Shift+Tab to the action for toggling Plan mode.
4. Focus the composer and place the cursor in normal text or an empty prompt, outside a Markdown list.
5. Press Shift+Tab once.
6. Observe that focus moves away from the composer, but Plan mode is not activated.
7. Press Shift+Tab again.
8. Observe that Plan mode is now activated.

What is the expected behavior?

When Shift+Tab is configured as the shortcut for toggling Plan mode:

• If the cursor is in a Markdown list where outdenting is applicable, Shift+Tab may outdent the list item.
• If no list outdent operation applies, pressing Shift+Tab once should immediately toggle Plan mode.
• The user should not need to move focus away from the composer or press the shortcut twice.

Additional information

Relative issue #31942