CLI crashes when rapidly deleting text (holding backspace)

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1

Where does the bug appear (feature/product)?

Cursor CLI

Describe the Bug

When holding backspace to delete multiple characters/lines quickly in the Cursor CLI, the CLI consistently crashes. Have to restart the terminal and recover session (if possible).

Steps to Reproduce

Steps to reproduce:

  1. Open Cursor CLI
  2. Type 2+ lines of text in the prompt
  3. Position cursor at the end
  4. Hold backspace to delete text rapidly

Expected Behavior

Expected: Text deletes normally
Actual: CLI crashes

Workaround: Delete 10-15 characters, pause briefly, repeat until done. Slowing the deletion prevents the crash.

Operating System

Linux

Version Information

Environment:
• OS: Linux 6.17.0-23-generic
• Shell: bash
• Cursor CLI version: 3.4.17 (93e603f703cd553a6bb3644711a3379bbbb31180, x64)

For AI issues: which model did you use?

Opus 4.5 Thinking

Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

5

Hey there!

This is an IDE version. Could you run agent -version or cursor-agent -version to get the CLI version?

7

2026.05.20-2b5dd59

8

Thanks @Jacob_Lassen. So far, I can’t reproduce.

Am I doing anything obviously different than you?

Latest stable is 2026.05.24. Would give upgrading a try since we fully updated the underlying UI framework.

If not, we have another fix (not yet released) to avoid buffering fast typed chunks, and to keep control chunks on buffered path . These might also help.

9

What you show is what does not work for me, so the only difference I can see is that I am running the CLI on a somewhat old PC (Dell optiplex 3090, i5, 16GB) . I will try the latest stable. If that does not work, I will test on a newer PC to see if I can reproduce it.