AI pane becomes an empty block when switching

[AragorN]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

When I switch to an “editor mode” agent tab the “sidebar mode” AI pane becomes an empty block.

Steps to Reproduce

When you have AI pane toggled on switch to a AI tab in the editor mode.

Expected Behavior

The AI pane should stay as it is.

Screenshots / Screen Recordings

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.0.43 (Universal)
VSCode Version: 1.99.3
Commit: 8e4da76ad196925accaa169efcae28c45454cce0
Date: 2025-10-30T18:49:27.589Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.6.0

For AI issues: which model did you use?

All.

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report. I can’t reproduce this on version 2.0.44.

Could you share a few details to help me replicate it?

• What exact sequence of actions triggers it? (e.g., “open AI pane in the sidebar → start a chat → ???”)
• Does it happen every time, or only in certain situations?
• Do you have any extensions that might affect the UI? (Help > Extensions)
• Does restarting Cursor temporarily fix it?
• If you open the console (Help > Toggle Developer Tools), do any errors appear when it happens?

Let me know and we’ll dig deeper.

[AragorN]

While having an active Editor agent tab, toggle on the AI pane, and then using the cross close the chat (the tab) in the AI pane.

This is it and I see that my original report is misleading so please excuse me.

[AragorN]

[deanrie]

Thanks for the video. The fact that clicking the X opens a new chat in a tab means your default location is set to Editor.

As for the empty panel, I’m not sure if it’s a bug. The right panel is secondary and can host tabs from the left panel. This behavior existed in the previous version as well.