Misleading, Browser Debugging, Difficulty with Complex Backend tasks, Terminal Process Stuck And Disrupting Previously Corrected Code

[deanrie]

Hey, thanks for the report. I see three related issues: browser debugging is misleading, the terminal hangs, and the agent breaks already fixed code.

This is a known set of issues. Please check in order:

1. Terminal hangs - most common root cause of the others:
   Settings > Agents > “Legacy Terminal Tool” - try toggling it, then Cmd+Shift+P > “Terminal: Kill All Terminals”, restart Cursor.
   If you use Oh My Zsh/Powerlevel10k/Starship - they can break the agent’s command completion detection. Details: 🛠️ Guide: Fix Cursor Agent Terminal Hangs Caused by .zshrc

2. Browser debugging for backend:
   The built-in agent browser is fine for UI tests, but not great for complex backend tasks. For full debugging, use MCP Browser Tools:

   • Install GitHub - AgentDeskAI/browser-tools-mcp: Monitor browser logs directly from Cursor and other MCP compatible IDEs.
   • Chrome extension + npx @agentdeskai/browser-tools-server@latest
   • Configure MCP in Settings > Tools & MCP
     This gives the agent access to console, network logs, and errors without manual copy-paste.

3. Agent breaks fixed code:

   • Use Checkpoints in Composer to roll back: Checkpoints | Cursor Docs
   • Start a new chat after 8-10 iterations - old context gets confusing
   • Use Review before applying changes: Review | Cursor Docs

4. Extensions can cause hangs:
   Run cursor --disable-extensions and see if it still reproduces.

To diagnose precisely, please share:

• Request IDs of problematic requests (Privacy Mode off): Getting a Request ID | Cursor Docs
• Which shell you use (zsh/bash/fish) and any prompt themes (oh-my-zsh, powerlevel10k, starship)
• A screenshot of the agent’s stuck terminal
• The specific command that hangs
• Your installed Cursor extensions
• Settings > Network > Run Diagnostics - the result

Share the details and I can help more precisely or escalate to the team.