Sidebar sometimes opens itself

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I’m using the new agent view in cursor and sometimes when switching between chats, the right sidebar panel suddenly expands itself, so i have to close it manually. Also the newly introduced “mini sidebar” does never respect the user choice and always expands again when you switch chats.

Steps to Reproduce

Sidebar Panel

  • Use new agent view
  • Close sidebar
  • Switch random between chat sessions or settings
    → Sidebar panel opens randomly

New mini sidebar

  • Collapse mini sidebar
  • Switch chat
    → Mini sidebar expanded again

Expected Behavior

The sidebar(s) should respect the user choice and stay in the last state.

Screenshots / Screen Recordings

Operating System

Windows 10/11

Version Information

Version: 3.8.11 (user setup)
VS Code Extension API: 1.105.1
Commit: e56ad3440df06d22ca7501e65fd518e905486ef0
Date: 2026-06-18T01:40:18.333Z
Layout: editor
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26100

Does this stop you from using Cursor

No - Cursor works, but with this issue

Hi! These are actually two separate things, so I’ll take them one at a time.

Right sidebar opening on its own when you switch chats: this is a known issue on our side, and a recent regression. Switching agent conversations can re-reveal the right sidebar even when you’d closed it. There’s no clean workaround yet, but the team is aware and looking into it. One detail that would help us pin down the trigger: does it tend to happen when you switch into a chat that has something live in that panel, like a browser or a terminal?

Mini sidebar re-expanding every time: this one is current default behavior rather than a regression. The mini sidebar opens expanded and doesn’t yet remember when you’ve collapsed it, so it re-expands on each chat switch. We’ve heard the same feedback internally, and making it remember your collapsed state is something we’re tracking. There’s no setting to keep it collapsed today.

I’ll post back here as either of these moves. Thanks again for flagging both.

Hi @mohitjain normally i dont have browser or teminals open so i think its not related to that. I will keep an eye on it. Regarding the new mini sidebar, it would be good if this remembers the state or could be disabled in the settings to have a clean focussed workspace without visual clutter.