Completion while typing not working

Start with Core/Sources/KeyBindingManager/TabToAcceptSuggestion.swift, the only source file named in the logs, and compare the reported streamChoices and ghostText messages with the completion flow. Reproduce the issue using the listed Copilot for Xcode, Xcode, and macOS versions; done means completion suggestions appear while typing and can be accepted normally.

Describe the bug

Versions

• Copilot for Xcode: 0.44.151
• Xcode: 26.2
• macOS: 26.1

Completion while typing is not working, with the following logs

[2025-11-12T02:52:44.767Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] choice { text: '\n', index: 1, finish_reason: null }",
"type" : 4
}
[2025-11-12T02:52:44.767Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] choice { text: '\t', index: 1, finish_reason: 'stop' }",
"type" : 4
}
[2025-11-12T02:52:44.767Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] solution 1 returned. finish reason: [stop]",
"type" : 3
}
[2025-11-12T02:52:44.767Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] solution 1 details: finishOffset: [undefined]",
"type" : 4
}
[2025-11-12T02:52:44.769Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] chunk data: [DONE]\n\n",
"type" : 4
}
[2025-11-12T02:52:44.769Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] request done: headerRequestId: [de272066-308c-4643-9fb4-0b5478083229] model deployment ID: []",
"type" : 4
}
[2025-11-12T02:52:44.769Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[streamChoices] request stats: ChunkStats {\n choices: Map(3) {\n 0 => ChoiceStats { yieldedTokens: 3, seenTokens: 3 },\n 1 => ChoiceStats { yieldedTokens: 3, seenTokens: 3 },\n 2 => ChoiceStats { yieldedTokens: 3, seenTokens: 3 }\n }\n}",
"type" : 4
}
[2025-11-12T02:52:44.769Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[ghostText] Produced 0 results from cycling at -1 offset",
"type" : 4
}
[2025-11-12T02:52:44.769Z] [info] [GitHubCopilot] [90407] didChangeStatus: {
"kind" : "Normal",
"busy" : false
}
[2025-11-12T02:52:44.770Z] [info] [GitHubCopilot] [90407] window/logMessage: {
"message" : "[getCompletions] No ghostText produced -- empty: no completions in final result",
"type" : 4
}
[2025-11-12T02:52:50.241Z] [debug] [Service] [90407] TabToAcceptSuggestion: Deactivate.
file: /Users/runner/work/copilot-xcode/copilot-xcode/Core/Sources/KeyBindingManager/TabToAcceptSuggestion.swift
line: 15
function: TabToAcceptSuggestion
[2025-11-12T02:52:50.328Z] [info] [Service] [90407] Extension Service is not updated, no need to quit.