[BUG] terminal window size issue or rendering calculation bug

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Randomly, sometimes claude shows this error and exits:

  ERROR  Invalid count value: -3

 -     at String.repeat
   (<anonymous>)
 -YO7 
     (file:///opt/homebrew/lib/n
     ode_modules/@anthropic-ai/c
     laude-code/cli.js:8066:207)

 -E_ (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:20985)

 -Hw (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:39521)

 -tk (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:50211)

 -jX6 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8686
     8)
 -H38 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8583
     1)
 -O96 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8565
     2)
 -w38 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8240
     2)
 -b6 (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:6356)

I did not modify the terminal's size when the error happened.

What Should Happen?

Claude should simply not fail this way, and erase all logs and prompts before hand.

I lost all conversation log + prompts.

Error Messages/Logs

ERROR  Invalid count value: -3

 -     at String.repeat
   (<anonymous>)
 -YO7 
     (file:///opt/homebrew/lib/n
     ode_modules/@anthropic-ai/c
     laude-code/cli.js:8066:207)

 -E_ (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:20985)

 -Hw (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:39521)

 -tk (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:50211)

 -jX6 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8686
     8)
 -H38 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8583
     1)
 -O96 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8565
     2)
 -w38 (file:///opt/homebrew/lib/
     node_modules/@anthropic-ai/
     claude-code/cli.js:554:8240
     2)
 -b6 (file:///opt/homebrew/lib/n
    ode_modules/@anthropic-ai/cl
    aude-code/cli.js:554:6356)

Steps to Reproduce

I do not know, but it is the 3d time it happened to me while I was not interacting at all with the cli.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.91

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

I can not even go back look at the prompt i ran and the previous Claude log messages.
It is as if he did /clear and then displays the ERROR Invalid count value: -3 error.