# Cursor Go Debugger: 'Restart' hangs server while 'Stop' works

**URL:** <https://forum.cursor.com/t/cursor-go-debugger-restart-hangs-server-while-stop-works/120942>\
**Category:** Bug Reports\
**Created:** [July 22, 2025, 1:25am UTC](https://forum.cursor.com/t/cursor-go-debugger-restart-hangs-server-while-stop-works/120942 "2025-07-22T01:25:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![superplain99](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/superplain99/32/56714_2.png) [@superplain99](https://forum.cursor.com/u/superplain99)\
**Post date:** [July 22, 2025, 1:25am UTC](https://forum.cursor.com/t/cursor-go-debugger-restart-hangs-server-while-stop-works/120942/1 "2025-07-22T01:25:00Z")

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### Describe the Bug

For some time now, the ‘Restart’ debug command in Cursor hasn’t been working correctly after I launch my Go server.

When I run my Go server (I’ve tested this with both Fiber and WebSocket servers), the ‘Stop’ button terminates the process as expected. However, when I press the ‘Restart’ button, the process hangs instead of terminating, and it continues to occupy the port. If I then send a kill signal to the hung process from an external terminal, the restart operation proceeds.

A strange thing is that if I press the ‘Restart’ button multiple times while it’s hung, a corresponding number of “exiting…” messages appear all at once after the process is finally killed.

I suspect that when I press the ‘Restart’ button, the signal isn’t being delivered to the process correctly, perhaps due to a lock. When an external kill signal releases this lock, all the queued restart signals seem to be delivered at once.

I’m not sure if this is a problem with Go’s Delve debugger (dlv) or with Cursor itself. I’ve reproduced the same issue on a secondary computer with a fresh install of Cursor and a simple test case.

### Steps to Reproduce

1. start golang process
2. press restart button

### Expected Behavior

process don’t be terminated

### Operating System

MacOS

### Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.2.4 (Universal)  
VSCode Version: 1.99.3  
Commit: a8e95743c5268be73767c46944a71f4465d05c90  
Date: 2025-07-10T16:55:16.443Z  
Electron: 34.5.1  
Chromium: 132.0.6834.210  
Node.js: 20.19.0  
V8: 13.2.152.41-electron.0  
OS: Darwin arm64 24.5.0

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<div class="post-metadata">

**Author:** ![superplain99](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/superplain99/32/56714_2.png) [@superplain99](https://forum.cursor.com/u/superplain99)\
**Post date:** [July 22, 2025, 4:23am UTC](https://forum.cursor.com/t/cursor-go-debugger-restart-hangs-server-while-stop-works/120942/2 "2025-07-22T04:23:25Z")

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I’ve found the cause. The issue was with Delve (`dlv`) version 1.25.1.

Apparently, v1.25.1 included some improvements related to the restart functionality. However, it seems a change was also made to disable restarts in `noDebug` mode (“Run Without Debugging”). I’m a bit puzzled as to why this would affect normal debug mode, but that appears to be the case.

For now, I’ve downgraded to `dlv` v1.25.0 and can confirm that everything is working correctly again.

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**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\
**Post date:** [August 13, 2025, 4:23am UTC](https://forum.cursor.com/t/cursor-go-debugger-restart-hangs-server-while-stop-works/120942/3 "2025-08-13T04:23:32Z")

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