[BUG] Content area clipped/hidden when sidebar is open

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?

After the latest app update, when the sidebar is open, the main chat content area is partially hidden — not just resized to fit the remaining space, but actually clipped. Text and images that should be visible are cut off behind the sidebar.

When the sidebar is closed, everything displays correctly. This issue did not occur before the update.

Expected behavior: The chat content area should resize/reflow to fit the available space when the sidebar is open, without hiding any content.

Actual behavior: Part of the content is hidden/clipped behind the sidebar overlay, as if the content area doesn't account for the sidebar width.

Regression: Started after the most recent app update. Was working correctly in the previous version.

Environment:

App: Claude Desktop
OS: macOS (Darwin 24.6.0)
Screen: (add your screen resolution here)
App version: (check in Claude menu → About)

What Should Happen?

The screen is supposed to be fully revealed

Error Messages/Logs

Steps to Reproduce

It's a GUI screen bug, as seen in the photo

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.104

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

<img width="1118" height="708" alt="Image" src="https://github.com/user-attachments/assets/36c9c9dd-7fb5-4137-a981-a9003905c697" />