GitHub Copilot CLI 1.0.89-2 lets you retract a queued prompt with Esc Esc and keeps valid MCP servers when a sibling entry is broken

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Copilot CLI v1.0.89-2 (2026-09-24) makes pre-registered MCP OAuth clients honor configured oauthScopes. MCP config loading now keeps valid workspace servers when sibling entries are invalid, where before one bad entry could take down the rest. In local sessions, Esc Esc in an empty input takes back a prompt the model hasn't started answering and removes it from the conversation. Oversized Claude attachment requests now recover automatically before sending.