Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
When launching Cursor with the Agents window open simultaneously, the UI fails to render completely. Instead of showing full details, file blocks and action cards collapse into raw text lines (e.g., showing only plain “Edit file”, “Thought”, “Explored” labels without full code diffs or expanded details), as shown in the attached screenshot.
Steps to Reproduce
Open Cursor while the Agents window/panel is active from a previous session.
Observe the initial rendering of the Agent activity/output stream.
The panel content remains visually broken or stuck in a minimal plain-text representation until manually refreshed or toggled.
Expected Behavior
The Agent window should properly render rich UI components (code diffs, expandable action details, and full block contents) automatically on startup.
Screenshots / Screen Recordings
Operating System
Windows 10/11
Version Information
Version: 3.18.9 (user setup)
VS Code Extension API: 1.128.0
Commit: 2ba48ff3f7514cc4643c52ca9f7b3173d9b66130
Date: 2026-08-27T01:42:22.092Z
Layout: IDE
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.291
OS: Windows_NT x64 10.0.26200
Does this stop you from using Cursor
No - Cursor works, but with this issue