Describe the bug
After GitHub Copilot CLI has been running interactively for a while, selecting some displayed text with the mouse and then right-clicking to copy frequently causes the entire terminal viewport to turn black.
After the blackout, clicking different rows with the mouse makes content reappear incrementally, row by row, rather than restoring the complete view at once.
This is intermittent but happens with high frequency in my normal usage. The exact session duration or amount of output needed to trigger it has not been isolated.
Affected version
GitHub Copilot CLI 1.0.89-5.
Steps to reproduce the behavior
- Start an interactive Copilot CLI session in Windows Terminal.
- Use the session for a while so there is conversation output to select.
- Select a portion of the displayed text using the mouse.
- Right-click to copy the selection.
- Observe that the terminal viewport frequently becomes entirely black.
- Click different rows in the viewport. Content gradually reappears on those rows instead of the full UI being redrawn.
These steps describe the observed usage pattern, not a deterministic minimal reproduction. I have not yet isolated whether the blackout begins during selection or specifically when right-clicking to copy.
Expected behavior
Selecting and copying text should leave the conversation and input UI visible and usable. Clearing a selection should not blank the viewport or require clicking individual rows to restore the display.
Additional context
Environment collected from the affected machine:
- OS: Windows, build 10.0.26300.
- Terminal: Windows Terminal; installed package version 1.24.11911.0. The diagnostic environment has
WT_SESSION set.
- PowerShell version in the diagnostic environment: 7.6.6.
- Copilot CLI: 1.0.89-5, confirmed with
copilot --version.
The distinctive symptom is the partial, row-by-row visual recovery when clicking after the blackout. This may help narrow down a repaint/invalidation problem, but the root cause is not established: it could be in the CLI renderer, Windows Terminal, or their interaction. No claim is made that the CLI process has crashed or that conversation data has been lost.
Not yet isolated: fresh versus long-running sessions, selection versus right-click, keyboard-copy behavior, recovery by resizing, and behavior in another terminal.
Related reports found while checking for duplicates:
These reports may or may not share a root cause.
Describe the bug
After GitHub Copilot CLI has been running interactively for a while, selecting some displayed text with the mouse and then right-clicking to copy frequently causes the entire terminal viewport to turn black.
After the blackout, clicking different rows with the mouse makes content reappear incrementally, row by row, rather than restoring the complete view at once.
This is intermittent but happens with high frequency in my normal usage. The exact session duration or amount of output needed to trigger it has not been isolated.
Affected version
Steps to reproduce the behavior
These steps describe the observed usage pattern, not a deterministic minimal reproduction. I have not yet isolated whether the blackout begins during selection or specifically when right-clicking to copy.
Expected behavior
Selecting and copying text should leave the conversation and input UI visible and usable. Clearing a selection should not blank the viewport or require clicking individual rows to restore the display.
Additional context
Environment collected from the affected machine:
WT_SESSIONset.copilot --version.The distinctive symptom is the partial, row-by-row visual recovery when clicking after the blackout. This may help narrow down a repaint/invalidation problem, but the root cause is not established: it could be in the CLI renderer, Windows Terminal, or their interaction. No claim is made that the CLI process has crashed or that conversation data has been lost.
Not yet isolated: fresh versus long-running sessions, selection versus right-click, keyboard-copy behavior, recovery by resizing, and behavior in another terminal.
Related reports found while checking for duplicates:
These reports may or may not share a root cause.