[BUG]

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Desktop app (Code tab), Claude Code 2.1.295, Windows 11.

In split view (two sessions stacked in one window), a plugin's
ui.render hook for the AbovePrompt band is only drawn in the top pane.
The bottom pane shows no band, even when focused.

The plugin is loaded in the bottom session: its turn.complete and
prompt.section hooks run there normally. Opening the same session on its
own (no split) shows the band as expected.

Expected: each pane draws its own session's AbovePrompt band.

What Should Happen?

Each pane in split view should draw its own session's AbovePrompt band, the same way it does when the session is open on its own.

Error Messages/Logs

Steps to Reproduce

1. Install a plugin with a ui.render hook on { component: 'AbovePrompt' } that returns a band
2. Open two sessions in split view (one above the other)
3. The band shows in the top pane only; the bottom pane has none, even after clicking into it
4. Open the bottom session on its own: the band shows

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.1.295

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

Not a terminal: this happens in the Claude desktop app (Code tab), Windows 11, app package 2.31226.1.0. 2.1.295 is the latest Claude Code version bundled by the desktop app; npm already has 2.1.296, but the app has not picked it up yet.