Desktop App: 'Toggle Sidebar' menu option (Ctrl+B) is unresponsive in new UI

[missionctrlbiz]

Bug Report: "Toggle Sidebar" menu option (Ctrl+B) is unresponsive

Description

In the desktop application, navigating to View > Toggle Sidebar (or using the keyboard shortcut Ctrl+B) currently does nothing.

Context & Observations

Recently, a new UI update was pushed (accessible via a settings flag) that redesigned the user interface. In the previous UI format, the sidebar existed as a distinct vertical panel. In the new UI layout, the sidebar functionality appears to have been migrated into a tab-based system.

Because the UI was changed, the "Toggle Sidebar" menu item seems to have been left in a broken or non-functional state.

Expected Behavior

Clicking View > Toggle Sidebar (or pressing Ctrl+B) should have a clear result:

• If the plan is to keep the new tab-based UI: The menu option should either toggle a specific view related to the new layout, or be removed entirely if a sidebar no longer exists.
• If the plan is to allow toggling between UI paradigms: The toggle should switch the user between the new tabbed layout and the legacy sidebar layout.

Leaving an unresponsive menu item in the File > View menu creates confusion for the user.

Steps to Reproduce

1. Open the OpenCode Desktop Application.
2. (If applicable) Ensure the new UI flag is toggled on in settings.
3. In the top application menu, click View.
4. Click Toggle Sidebar (or press Ctrl+B).
5. Observe that no visual change occurs in the application layout.

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [Desktop BETA] Sidebar missing #28971: Same symptoms reported — View > Toggle Sidebar does nothing after the new UI update redesigned the sidebar into a tab-based layout.

For keybind-related issues, please also check our pinned keybinds documentation: #4997