Preflight Checklist
What's Wrong?
Copy functionality broken in Claude Code over SSH (macOS → Ubuntu); paste works but copy does not
Environment:
Local machine: macOS 15.7.7
Remote machine: Ubuntu (Linux 6.8.0-134-generic)
Claude Code version: 2.1.201
Connection: SSH from macOS into Ubuntu
Issue:
When running Claude Code over SSH from macOS to Ubuntu, the copy functionality is completely broken while paste works fine. This only affects Claude Code — copying works normally outside of Claude Code in the terminal.
Behavior:
Inside Claude Code TUI: Copy is broken (Ctrl+Shift+C does nothing, copy button greyed out)
Inside Claude Code TUI: Paste works fine (Ctrl+V works)
Outside Claude Code in terminal: Both copy and paste work normally
This occurs specifically when Claude Code is running; clipboard functions normally before/after
Current workaround:
Run Claude Code, then use tmux to switch windows, copy the output there (where clipboard works), paste into a file, then manually retrieve it. This is extremely cumbersome and defeats the purpose of an interactive CLI.
What Should Happen?
Expected behavior:
Copy should work inside Claude Code TUI over SSH, just as it does in the terminal outside Claude Code.
Error Messages/Logs
Steps to Reproduce
Reproduction steps:
SSH from macOS into Ubuntu box
Launch Claude Code with claude
Try to highlight copy text from Claude Code output (either via mouse selection or Ctrl+Shift+C)
Attempt to paste elsewhere — clipboard is unchanged
Exit Claude Code
Try to copy and paste from terminal — works fine
Claude Model
No response
Is this a regression?
I don't know
Last Working Version
Unsure version but worked in previous version to this one.
Claude Code Version
2.1.201
Platform
Other
Operating System
Ubuntu/Debian Linux
Terminal/Shell
Terminal.app (macOS)
Additional Information
No response
Preflight Checklist
What's Wrong?
Copy functionality broken in Claude Code over SSH (macOS → Ubuntu); paste works but copy does not
Environment:
Local machine: macOS 15.7.7
Remote machine: Ubuntu (Linux 6.8.0-134-generic)
Claude Code version: 2.1.201
Connection: SSH from macOS into Ubuntu
Issue:
When running Claude Code over SSH from macOS to Ubuntu, the copy functionality is completely broken while paste works fine. This only affects Claude Code — copying works normally outside of Claude Code in the terminal.
Behavior:
Inside Claude Code TUI: Copy is broken (Ctrl+Shift+C does nothing, copy button greyed out)
Inside Claude Code TUI: Paste works fine (Ctrl+V works)
Outside Claude Code in terminal: Both copy and paste work normally
This occurs specifically when Claude Code is running; clipboard functions normally before/after
Current workaround:
Run Claude Code, then use tmux to switch windows, copy the output there (where clipboard works), paste into a file, then manually retrieve it. This is extremely cumbersome and defeats the purpose of an interactive CLI.
What Should Happen?
Expected behavior:
Copy should work inside Claude Code TUI over SSH, just as it does in the terminal outside Claude Code.
Error Messages/Logs
Steps to Reproduce
Reproduction steps:
SSH from macOS into Ubuntu box
Launch Claude Code with claude
Try to highlight copy text from Claude Code output (either via mouse selection or Ctrl+Shift+C)
Attempt to paste elsewhere — clipboard is unchanged
Exit Claude Code
Try to copy and paste from terminal — works fine
Claude Model
No response
Is this a regression?
I don't know
Last Working Version
Unsure version but worked in previous version to this one.
Claude Code Version
2.1.201
Platform
Other
Operating System
Ubuntu/Debian Linux
Terminal/Shell
Terminal.app (macOS)
Additional Information
No response