[BUG] Dotted background removed from Code tab in Claude Code Desktop app

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?

What's Wrong?
In the Claude Code desktop app, the Chat tab has a plain background, the Cowork tab has a grid background. The CODE tab (in Claude Code Desktop app) used to have a subtle and beautiful DOTTED background but now it is removed in the new update for no reason. Why was the dotted background from Claude Code > Code tab removed?

If Cowork tab can have a grid background without it being a problem, there's no coherent reason to strip the dotted background from the CODE tab in the Claude Code desktop app, especially when it served a functional purpose (tab identification) on top of being aesthetically nice, subtle and pretty and provided immediate visual context about which tab/surface you were in.

What was lost: The distinct per-surface background (dots for Claude CODE tab) that provided immediate visual context about which tab/surface you were in
The inconsistency: Claude Cowork retains its grid background in the same app update cycle, so the removal appears selective rather than principled
The functional impact: Without background differentiation, the tabs feel visually homogeneous, requiring users to rely solely on the tab label for orientation
What I’m asking for: Restore the dotted background, or at minimum provide a setting to re-enable per-surface background patterns

What Should Happen?
The CODE tab in Claude Code desktop should have the previous dotted background

What Should Happen?

The Code tab in Claude Code desktop should have the previous DOTTED background

Error Messages/Logs

Steps to Reproduce

Launch Claude Code desktop app.
Go to the CODE tab -> No identifying dotted background

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.6679 (f8f4ff)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Screenshot of Code tab with the missing dotted background

<img width="2404" height="1678" alt="Image" src="https://github.com/user-attachments/assets/22706214-4813-44a1-9a56-529290ee2151" />