GitHub Release Notes

2026-09-28

• Left-clicking supported ask_user and elicitation form inputs focuses them and places the cursor at the clicked position
• Add support for Claude Code rule files in .claude/rules as custom instructions
• Sessions in the sidebar show a blue dot when they finished a turn you have not opened yet
• Auto suggests a routing tier and lets you switch with a shortcut or click
• Auto shows a quick feedback prompt after switching away to a manually selected model
• MCP pre-registered OAuth clients honor configured oauthScopes.
• In local sessions, Esc Esc in an empty chat input takes back a prompt whose turn the model has not started answering and removes it from the conversation
• Add GPT-6 Sol and GPT-6 Luna to the model picker when available
• Adding support for claude-opus-5.5
• Shell output no longer shows trailing command completion metadata.
• Timeline output stops auto-following while text selection is active
• server/tool and server/* tool filters now match MCP tool names that contain a slash
• Queue exit commands while an agent response is still running
• Extensions no longer fail to load under enterprise managed settings while managed MCP policy is still being applied
• Fixed Git failures in applications launched from CLI shells when empty environment variables are dropped, on Git 2.36 or newer.
• Sessions sidebar saves opened and closed tabs as they change, rather than only on exit
• Agent shell commands in sandbox can access session files and logs …

Added

• Left-clicking supported ask_user and elicitation form inputs focuses them and places the cursor at the clicked position
• Add support for Claude Code rule files in .claude/rules as custom instructions
• Sessions in the sidebar show a blue dot when they finished a turn you have not opened yet

Fixed

• Extensions no longer fail to load under enterprise managed settings while managed MCP policy is still being applied
• Fixed Git failures in applications launched from CLI shells when empty environment variables are dropped, on Git 2.36 or newer.
• Sessions sidebar saves opened and closed tabs as they change, rather than only on exit
• Agent shell commands in sandbox can access session files and logs

Added

• Auto suggests a routing tier and lets you switch with a shortcut or click
• Auto shows a quick feedback prompt after switching away to a manually selected model

Improved

• Direct plugin installs can now be enabled and disabled. One already recorded as disabled now stops loading; re-enable it with copilot plugin enable

Fixed

• Fix Auto tier selection to cycle correctly in /model and remove the unsupported Fast profile; a previously stored, exported, or resumed Fast preference now falls back to Balance instead of routing on it
• Run wrapped gh and git commands, such as timeout 60 gh ..., correctly in sandboxed sessions
• ACP sessions stay connected when clients pause reading large responses
• Gemini models no longer fail every request with 400 invalid request body when an MCP server exposes a tool whose schema puts a type or properties beside anyOf, such as a nullable discriminated union
• GitHub MCP tools connect correctly on first CLI startup after sign-in

Added

• MCP pre-registered OAuth clients honor configured oauthScopes.
• In local sessions, Esc Esc in an empty chat input takes back a prompt whose turn the model has not started answering and removes it from the conversation

Improved

• Sandboxed commands on supported Windows versions can access localhost when Local network access is on
• Autocomplete model IDs in /model and /model plan argument pickers

Fixed

• MCP config loading keeps valid workspace servers when sibling entries are invalid
• Delete old sessions succeeds when run directly in the CLI
• Claude requests above attachment size limits now recover automatically before sending.
• Listing shells shows running shells first, so a shell still running in the background is no longer hidden behind a long list of finished ones