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Copilot CLI remote SSH session reports “Copied” but clipboard remains empty on macOS #4551
Description
Describe the bug
Summary
When using Copilot CLI on a remote Linux machine over SSH from macOS Terminal, copy actions report success ("Copied to clipboard") but the selected text is not actually placed into the macOS clipboard.
Environment
Local OS: macOS (Apple Terminal)
Terminal: Terminal.app Version 2.15 (470.2)
Connection: ssh -p <port> <host>
Remote OS: Ubuntu 24.04.4 LTS
Copilot CLI version: 1.0.80
Steps to Reproduce
From macOS Terminal.app, connect to a remote Ubuntu machine via SSH:
ssh -p <port> <host>
Run Copilot CLI on the remote machine.
Generate output in the CLI and select part of the text in the terminal.
Try to copy the selected text (right-click copy or Ctrl+C in the terminal context).
Observe that Copilot CLI shows a "Copied" confirmation message.
Paste into another app on macOS (e.g., Notes/TextEdit).
Expected Behavior
Selected text should be copied to the macOS system clipboard and be available for paste in other local apps.
Actual Behavior
Copilot CLI shows a "Copied" confirmation, but the text is not present in the macOS clipboard.
Additional Notes
Reproducible every time.
Also reproducible on machines other than mine.
This does not happen when Copilot is used locally (without SSH / without remote host).
Affected version
GitHub Copilot CLI 1.0.80
Steps to reproduce the behavior
No response
Expected behavior
No response
Additional context
No response
Reacted by adam-stanek and DazzaL
Activity
adam-stanek commentedon Sep 5, 2026
Same. Launching with
--no-mousehelps.GitHub Copilot CLI 1.0.83.
aodanosullivan commentedon Sep 9, 2026
This did not work for me.
GitHub Copilot CLI 1.0.83 launched via node on Google cloud workstations.
larsxschneider commentedon Oct 17, 2026
Do you run it under tmux?
set -g allow-passthrough onhelped me with this problem.