Cursor Freezes MacBook Air M3 When Switching Back to Cursor App

Bug Reports
1

I’m experiencing a consistent issue with Cursor on my MacBook Air M3. Every time I switch back to the Cursor window (e.g., via trackpad gesture or Cmd+Tab), my system freezes for a few seconds before becoming responsive again.

:counterclockwise_arrows_button: How to Reproduce

  1. Open Cursor on a MacBook Air M3.
  2. Switch to another app.
  3. Switch back to Cursor (e.g., with Cmd+Tab or swipe gesture).
  4. Observe a brief system freeze (~3–5 seconds).

:brain: Suspected Cause

It seems Cursor is pre-processing or attempting to read the prompt input before it’s actually submitted. This could be triggering unnecessary system resource usage upon window focus.

:white_check_mark: Feature Request

Please add a setting to disable pre-processing prompt input before submission. Cursor should only start processing once the user explicitly clicks the Submit button.

:laptop: Environment

  • macOS (MacBook Air M3)
  • Cursor version: 0.49.6

:prohibited: Impact

This bug interrupts my workflow and affects usability every time I return to the Cursor window.

1 Like
2

Hey, try booting in safe mode using this command in the terminal: cursor --disable-extensions, and check if the issue persists.

1 Like
3

Thanks for your reply. When I start Cursor using this command line, it crashes and gives me those logs:

[4776:0501/124506.138595:FATAL:gpu_data_manager_impl_private.cc(423)] GPU process isn’t usable. Goodbye.

[0501/124506.295088:WARNING:in_range_cast.h(38)] value -97304226 out of range

[0501/124506.302287:WARNING:crash_report_exception_handler.cc(235)] UniversalExceptionRaise: (os/kern) failure (5)

[0501/124506.303629:WARNING:process_memory_mac.cc(94)] mach_vm_read(0x16b734000, 0x8000): (os/kern) invalid address (1)

[0501/124506.470941:WARNING:in_range_cast.h(38)] value -97304226 out of range

zsh: trace trap cursor --disable-extensions

4

I disabled a few extensions and I do see some improvements.

update: I confirm the issue was because of one of the installed extension.

1 Like