Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
Cursor version: 3.1.17 (darwin-arm64)
OS: macOS 14.8.5 (Darwin 23.6.0)
Extension: anthropic.claude-code 2.1.120
Steps to reproduce
- Install the Claude Code extension; open its panel and start a conversation.
- Cmd+Shift+P, run “Developer: Reload Window”.
- Observe that the Claude Code panel reloads blank, no input field.
- In a terminal, run: ps aux | grep “native-binary/claude” | grep -v grep
Expected
On Reload Window, Cursor’s extension host should terminate child processes spawned by extensions, or at minimum expose an API so extensions can register children for cleanup. The new extension host instance should start with a clean IPC state.
Actual
The child claude process from the prior extension host survives reload. Observed up to 3 orphaned claude processes accumulating across reloads, around 3.3 GB resident memory combined. The new extension instance cannot bind IPC cleanly and hangs indefinitely with no input field.
Workaround
Run pkill -f "native-binary/claude" in a terminal, then reopen the panel and type /resume to restore the session.
Regression note
This did not occur on the prior Cursor version. It started after updating to 3.1.17.
Related
Filed with Anthropic: Reload Window leaves orphaned claude child processes; panel hangs binding IPC · Issue #53554 · anthropics/claude-code · GitHub. They may need to clean up child processes in deactivate(), but the extension host not killing children on reload is also a contributor.
Steps to Reproduce
Cursor version: 3.1.17 (darwin-arm64)
OS: macOS 14.8.5 (Darwin 23.6.0)
Extension: anthropic.claude-code 2.1.120
Steps to reproduce
- Install the Claude Code extension; open its panel and start a conversation.
- Cmd+Shift+P, run “Developer: Reload Window”.
- Observe that the Claude Code panel reloads blank, no input field.
- In a terminal, run: ps aux | grep “native-binary/claude” | grep -v grep
Expected
On Reload Window, Cursor’s extension host should terminate child processes spawned by extensions, or at minimum expose an API so extensions can register children for cleanup. The new extension host instance should start with a clean IPC state.
Actual
The child claude process from the prior extension host survives reload. Observed up to 3 orphaned claude processes accumulating across reloads, around 3.3 GB resident memory combined. The new extension instance cannot bind IPC cleanly and hangs indefinitely with no input field.
Workaround
Run pkill -f "native-binary/claude" in a terminal, then reopen the panel and type /resume to restore the session.
Regression note
This did not occur on the prior Cursor version. It started after updating to 3.1.17.
Related
Filed with Anthropic. They may need to clean up child processes in deactivate(), but the extension host not killing children on reload is also a contributor.
Expected Behavior
Cursor version: 3.1.17 (darwin-arm64)
OS: macOS 14.8.5 (Darwin 23.6.0)
Extension: anthropic.claude-code 2.1.120
Steps to reproduce
- Install the Claude Code extension; open its panel and start a conversation.
- Cmd+Shift+P, run “Developer: Reload Window”.
- Observe that the Claude Code panel reloads blank, no input field.
- In a terminal, run: ps aux | grep “native-binary/claude” | grep -v grep
Expected
On Reload Window, Cursor’s extension host should terminate child processes spawned by extensions, or at minimum expose an API so extensions can register children for cleanup. The new extension host instance should start with a clean IPC state.
Actual
The child claude process from the prior extension host survives reload. Observed up to 3 orphaned claude processes accumulating across reloads, around 3.3 GB resident memory combined. The new extension instance cannot bind IPC cleanly and hangs indefinitely with no input field.
Workaround
Run pkill -f "native-binary/claude" in a terminal, then reopen the panel and type /resume to restore the session.
Regression note
This did not occur on the prior Cursor version. It started after updating to 3.1.17.
Related
Filed with Anthropic. They may need to clean up child processes in deactivate(), but the extension host not killing children on reload is also a contributor.
Operating System
MacOS
Version Information
Cursor version: 3.1.17 (darwin-arm64)
OS: macOS 14.8.5 (Darwin 23.6.0)
Extension: anthropic.claude-code 2.1.120
Steps to reproduce
- Install the Claude Code extension; open its panel and start a conversation.
- Cmd+Shift+P, run “Developer: Reload Window”.
- Observe that the Claude Code panel reloads blank, no input field.
- In a terminal, run: ps aux | grep “native-binary/claude” | grep -v grep
Expected
On Reload Window, Cursor’s extension host should terminate child processes spawned by extensions, or at minimum expose an API so extensions can register children for cleanup. The new extension host instance should start with a clean IPC state.
Actual
The child claude process from the prior extension host survives reload. Observed up to 3 orphaned claude processes accumulating across reloads, around 3.3 GB resident memory combined. The new extension instance cannot bind IPC cleanly and hangs indefinitely with no input field.
Workaround
Run pkill -f "native-binary/claude" in a terminal, then reopen the panel and type /resume to restore the session.
Regression note
This did not occur on the prior Cursor version. It started after updating to 3.1.17.
Related
Filed with Anthropic: Reload Window leaves orphaned claude child processes; panel hangs binding IPC · Issue #53554 · anthropics/claude-code · GitHub. They may need to clean up child processes in deactivate(), but the extension host not killing children on reload is also a contributor.
Does this stop you from using Cursor
Sometimes - I can sometimes use Cursor