Describe the Bug
The UI freezes under Linux, MacOS, possibly other OS.
After a few minutes after starting the UI, no keyboard input and no mouse action is possible. After waiting for 5, 10, 30 secs you can input a few characters or click around but then again, the UI freezes for 5, 10, 30 secs … you can’t work this way.
I offer a $1,000 bug bounty for anybody who fixed the UI freeze bug for me.
Related bug reports:
- Cursor IDE AppImage crashes in Ubuntu 24.04 VM (ptyHost heartbeat failure, extensionHost termination)
- Cursor "No ptyHost heartbeat after 6 seconds" Bug Report
- [warning] No ptyHost heartbeat after 6 seconds
- Cursor Freezing:
I have no idea why a company with $1B funding isn’t able to fix a stupid UI bug which renders the complete product utterly unusable.
THANK YOU FOR YOUR ATTENTION IN THIS MATTER!!
Steps to Reproduce
- Start UI
- Do something
- UI freezes. No keyboard input, mouse action possible.
The agent keeps running and you see the agents output. But e.g. you are not able to stop it because … no mouse action possible.
Expected Behavior
- Start UI.
- Work.
Operating System
MacOS
Linux
Current Cursor Version (Menu → About Cursor → Copy)
Version: 1.1.6
VSCode Version: 1.96.2
Commit: 5b19bac7a947f54e4caa3eb7e4c5fbf832389850
Date: 2025-06-25T02:13:33.781Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Linux x64 5.15.0-141-generic
I have a machine with 64 GB RAM, plenty SSD, 8 core Intel CPU… plenty of power
Additional Information
I have the problem at least since version 0.50
What I have tried:
- Change graphics card from NVIDIA to AMD
- Tried all kind of CLI switches --disable-gpu etc.
- Purge .config/Cursor
- Reinstall everything
- Different versions
- Monitoring HTTP traffic (nothing special to see, no blocking calls)
Does this stop you from using Cursor
Yes - Cursor is unusable
Acceptance criteria for the bug bounty
- The solution must work on my PC.
- Flawless and uninterrupted working for at least 30mins.