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Compaction failed: received empty response from model (3x retry, manual /compact on Opus 4.6)

area:context-memoryContext window, memory, compaction, checkpoints, and instruction loadingContext window, memory, compaction, checkpoints, and instruction loading

area:modelsModel selection, availability, switching, rate limits, and model-specific behaviorModel selection, availability, switching, rate limits, and model-specific behavior

Status: Open.

Bug

#2861 In github/copilot-cli;

· ronkeele opened on Apr 20, 2026

CAPIError 400 when agent using view tool with GIF file -> blocks autopilot and essentially stops after error.

area:agentsSub-agents, fleet, autopilot, plan mode, background agents, and custom agentsSub-agents, fleet, autopilot, plan mode, background agents, and custom agents

area:toolsBuilt-in tools: file editing, shell, search, LSP, git, and tool call behaviorBuilt-in tools: file editing, shell, search, LSP, git, and tool call behavior

Status: Open.

Bug

#2860 In github/copilot-cli;

· mobileskyfi opened on Apr 20, 2026

CAPIError: 400 400 Bad Request

area:networkingProxy, SSL/TLS, certificates, corporate environments, and connectivity issuesProxy, SSL/TLS, certificates, corporate environments, and connectivity issues

Status: Open.

Bug

#2859 In github/copilot-cli;

· lodela opened on Apr 20, 2026

Collapse compaction summary by default in interactive sessions

area:context-memoryContext window, memory, compaction, checkpoints, and instruction loadingContext window, memory, compaction, checkpoints, and instruction loading

area:terminal-renderingDisplay and rendering: flickering, scrolling, line wrapping, output formattingDisplay and rendering: flickering, scrolling, line wrapping, output formatting

Status: Open.

Feature

#2858 In github/copilot-cli;

· yzeng58 opened on Apr 20, 2026

.github/instructions files fully inlined into system prompt ignoring applyTo frontmatter

area:configurationConfig files, instruction files, settings, and environment variablesConfig files, instruction files, settings, and environment variables

area:context-memoryContext window, memory, compaction, checkpoints, and instruction loadingContext window, memory, compaction, checkpoints, and instruction loading

Status: Open.

Bug

#2857 In github/copilot-cli;

· T-Gro opened on Apr 20, 2026

Tab key causes focus to shift to terminal tabs panel in VSCode integrated terminal

area:input-keyboardKeyboard shortcuts, keybindings, copy/paste, clipboard, mouse, and text inputKeyboard shortcuts, keybindings, copy/paste, clipboard, mouse, and text input

area:platform-windowsWindows-specific: PowerShell, cmd, Git Bash, WSL, Windows TerminalWindows-specific: PowerShell, cmd, Git Bash, WSL, Windows Terminal

Status: Open.

Bug

#2856 In github/copilot-cli;

· WakaTaira opened on Apr 20, 2026

Allow-All features

area:permissionsTool approval, security boundaries, sandbox mode, and directory restrictionsTool approval, security boundaries, sandbox mode, and directory restrictions

Status: Open.

Feature

#2855 In github/copilot-cli;

· slippybanana67 opened on Apr 20, 2026

Google gemini is not available in copilot CLI?

area:modelsModel selection, availability, switching, rate limits, and model-specific behaviorModel selection, availability, switching, rate limits, and model-specific behavior

Status: Open.

Feature

#2854 In github/copilot-cli;

· thompson0012 opened on Apr 20, 2026

/agent <name> - Allow direct invocation of agents by name

area:agentsSub-agents, fleet, autopilot, plan mode, background agents, and custom agentsSub-agents, fleet, autopilot, plan mode, background agents, and custom agents

Status: Open.

Feature

#2853 In github/copilot-cli;

· ssanderlin opened on Apr 20, 2026

session.shutdown event should persist the reason from SessionEndHookInput

area:sessionsSession management, resume, history, session picker, and session stateSession management, resume, history, session picker, and session state

Status: Open.

Feature

#2852 In github/copilot-cli;

· d0d1 opened on Apr 20, 2026

Configured thinking effort vanishes 5-10 seconds after opening gh copilot cli

area:platform-windowsWindows-specific: PowerShell, cmd, Git Bash, WSL, Windows TerminalWindows-specific: PowerShell, cmd, Git Bash, WSL, Windows Terminal

area:terminal-renderingDisplay and rendering: flickering, scrolling, line wrapping, output formattingDisplay and rendering: flickering, scrolling, line wrapping, output formatting

Status: Open.

Bug

#2851 In github/copilot-cli;

· kunalk16 opened on Apr 20, 2026

bash tool fails inside devenv shell with bash 5.3 — "Invalid shell ID: 0 / no active shell sessions"

area:platform-linuxLinux-specific: Wayland, X11, Ubuntu, Fedora, Alpine, ARM, terminal emulatorsLinux-specific: Wayland, X11, Ubuntu, Fedora, Alpine, ARM, terminal emulators

area:toolsBuilt-in tools: file editing, shell, search, LSP, git, and tool call behaviorBuilt-in tools: file editing, shell, search, LSP, git, and tool call behavior

Status: Open.

Bug

#2850 In github/copilot-cli;

· bluedevil947 opened on Apr 20, 2026