Copilot login persistence acros devcontainer instances

- Copilot Chat Extension Version: 0.63.0
- VS Code Version: 1.135.0 (08d4889f9ec4a1685d257b9b95de036c8e1ce1e5)
- OS Version: 22631.7517
- Feature (e.g. agent/edit/ask mode): authentication/login
- Selected model (e.g. GPT 4.1, Claude 3.7 Sonnet): n/a
- Logs:

Logs from instance where I 'closed' the login window
```
2026-08-27 07:04:59.499 [info] [GitExtensionServiceImpl] Initializing Git extension service.
2026-08-27 07:04:59.499 [info] FetcherService: Experimentation service not available yet, using default fetcher configuration.
2026-08-27 07:04:59.499 [info] Can't use the Electron fetcher in this environment.
2026-08-27 07:04:59.499 [info] Using the Node fetch fetcher.
2026-08-27 07:04:59.499 [info] [GitExtensionServiceImpl] Successfully activated the vscode.git extension.
2026-08-27 07:04:59.499 [info] [GitExtensionServiceImpl] Enablement state of the vscode.git extension: true.
2026-08-27 07:04:59.499 [info] [GitExtensionServiceImpl] Successfully registered Git commit message provider.
2026-08-27 07:04:59.784 [info] ConversationFeature: Waiting for copilot token or BYOK model to activate conversation feature
2026-08-27 07:04:59.785 [warning] [LanguageModelAccess] LanguageModel/Embeddings are not available without a Copilot token source
2026-08-27 07:04:59.785 [info] [CopilotCLIModels] Skipping model fetch since there is no Copilot token source
2026-08-27 07:04:59.786 [info] BYOK: registered 9 provider(s): ollama, anthropic, gemini, xai, openai, openrouter, azure, customoai, customendpoint
2026-08-27 07:04:59.786 [info] BYOK: fetching known models list
2026-08-27 07:04:59.786 [info] activationBlocker from 'languageModelAccess' took for 117ms
2026-08-27 07:05:00.067 [info] [CopilotCLI] OpenTelemetry enabled: exporter=file, source=github.copilot
2026-08-27 07:05:00.191 [info] [CopilotCLIChatSessionContentProvider] listSessions took 172.69009500000175ms
2026-08-27 07:05:00.343 [info] [CopilotCLI] MCP server started. Lock file: /root/.copilot/ide/88e43677-219e-4d77-bd77-ed60f0855c91.lock
2026-08-27 07:05:00.343 [info] [CopilotCLI] Server URI: unix:/tmp/mcp-ec1b5e/mcp.sock#%2Fmcp
2026-08-27 07:05:00.410 [info] Logged in as daantimmer
2026-08-27 07:05:00.704 [info] BYOK: Copilot Chat known models list fetched successfully.
2026-08-27 07:05:01.238 [info] Got Copilot token for daantimmer
2026-08-27 07:05:01.238 [info] Copilot Chat: 0.63.0, VS Code: 1.135.0
2026-08-27 07:05:01.398 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.398 [info] ConversationFeature: Activating contributions
2026-08-27 07:05:01.413 [info] Registering default platform agent...
2026-08-27 07:05:01.424 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.424 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.424 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.426 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.428 [info] activationBlocker from 'conversationFeature' took for 1782ms
2026-08-27 07:05:01.428 [info] [context keys] Setting context key: github.copilot-chat.activated
2026-08-27 07:05:01.440 [info] AuthenticationService: firing onDidAuthenticationChange from handleAuthChangeEvent identity change. Has token: true
2026-08-27 07:05:01.440 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:01.509 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:05:01.510 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:05:01.510 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:05:01.510 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:05:01.512 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:05:01.513 [info] GithubAvailableEmbeddingTypesManager: Got embeddings. Primary: metis-1024-I16-Binary. Deprecated:
2026-08-27 07:05:01.515 [info] WorkspaceChunkSearchService: using embedding type metis-1024-I16-Binary
2026-08-27 07:05:01.623 [info] [CopilotCLIChatSessionContentProvider] listSessions took 3.703566000000137ms
2026-08-27 07:05:02.087 [info] [CopilotCLIChatSessionContentProvider] listSessions took 5.498574000001099ms
2026-08-27 07:05:02.394 [info] Fetched model metadata in 2696ms 73ef513d-5d2d-40b1-a106-08df56cbdf2d
2026-08-27 07:05:02.867 [info] Latest entry: ccreq:latest.copilotmd
2026-08-27 07:05:02.869 [info] ccreq:94659796.copilotmd | markdown
2026-08-27 07:05:02.955 [info] ConversationFeature: BYOK models available
2026-08-27 07:05:02.955 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:05:03.740 [info] Fetched content exclusion rules for 2 repo(s) in 2157ms
2026-08-27 07:05:03.740 [info] ccreq:30654623.copilotmd | markdown
2026-08-27 07:05:03.917 [info] Successfully activated the GitHub.vscode-pull-request-github extension.
2026-08-27 07:05:03.917 [info] [githubTitleAndDescriptionProvider] Initializing GitHub PR title and description provider provider.
2026-08-27 07:05:03.917 [info] Successfully registered GitHub PR title and description provider.
2026-08-27 07:05:03.917 [info] Successfully registered GitHub PR reviewer comments provider.
2026-08-27 07:05:24.218 [info] [CopilotCLIChatSessionContentProvider] listSessions took 2.5547979999973904ms
```

Logs from instance where I logged in using github authentication:
```
2026-08-27 07:04:40.201 [info] [GitExtensionServiceImpl] Initializing Git extension service.
2026-08-27 07:04:40.201 [info] FetcherService: Experimentation service not available yet, using default fetcher configuration.
2026-08-27 07:04:40.201 [info] Can't use the Electron fetcher in this environment.
2026-08-27 07:04:40.201 [info] Using the Node fetch fetcher.
2026-08-27 07:04:40.201 [info] [GitExtensionServiceImpl] Successfully activated the vscode.git extension.
2026-08-27 07:04:40.201 [info] [GitExtensionServiceImpl] Enablement state of the vscode.git extension: true.
2026-08-27 07:04:40.201 [info] [GitExtensionServiceImpl] Successfully registered Git commit message provider.
2026-08-27 07:04:40.612 [info] ConversationFeature: Waiting for copilot token or BYOK model to activate conversation feature
2026-08-27 07:04:41.052 [info] [CopilotCLI] OpenTelemetry enabled: exporter=file, source=github.copilot
2026-08-27 07:04:41.074 [info] [CopilotCLIChatSessionContentProvider] listSessions took 29.07980099999986ms
2026-08-27 07:04:41.142 [info] [CopilotCLI] MCP server started. Lock file: /root/.copilot/ide/29e4823f-62c4-4178-aef9-632636195623.lock
2026-08-27 07:04:41.142 [info] [CopilotCLI] Server URI: unix:/tmp/mcp-pzQkoN/mcp.sock#%2Fmcp
2026-08-27 07:04:41.204 [info] Logged in as daantimmer
2026-08-27 07:04:42.173 [info] Got Copilot token for daantimmer
2026-08-27 07:04:42.173 [info] Copilot Chat: 0.63.0, VS Code: 1.135.0
2026-08-27 07:04:42.277 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.277 [info] ConversationFeature: Activating contributions
2026-08-27 07:04:42.291 [info] Registering default platform agent...
2026-08-27 07:04:42.302 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.303 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.303 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.303 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.304 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.304 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.324 [info] activationBlocker from 'conversationFeature' took for 1822ms
2026-08-27 07:04:42.325 [info] [context keys] Setting context key: github.copilot-chat.activated
2026-08-27 07:04:42.339 [info] AuthenticationService: firing onDidAuthenticationChange from handleAuthChangeEvent identity change. Has token: true
2026-08-27 07:04:42.339 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:04:42.349 [info] BYOK: registered 9 provider(s): ollama, anthropic, gemini, xai, openai, openrouter, azure, customoai, customendpoint
2026-08-27 07:04:42.349 [info] BYOK: fetching known models list
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.349 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:04:42.353 [info] GithubAvailableEmbeddingTypesManager: Got embeddings. Primary: metis-1024-I16-Binary. Deprecated:
2026-08-27 07:04:42.359 [info] WorkspaceChunkSearchService: using embedding type metis-1024-I16-Binary
2026-08-27 07:04:42.360 [info] activationBlocker from 'languageModelAccess' took for 1851ms
2026-08-27 07:04:42.719 [info] [CopilotCLIChatSessionContentProvider] listSessions took 238.36956499999906ms
2026-08-27 07:04:42.922 [info] [CopilotCLIChatSessionContentProvider] listSessions took 6.412086000000272ms
2026-08-27 07:04:43.140 [info] BYOK: Copilot Chat known models list fetched successfully.
2026-08-27 07:04:43.604 [info] Fetched model metadata in 3071ms 3255ae8a-9b78-46fc-83c6-c3fa22c0c2ab
2026-08-27 07:04:43.612 [info] Latest entry: ccreq:latest.copilotmd
2026-08-27 07:04:43.613 [info] ccreq:93d4eede.copilotmd | markdown
2026-08-27 07:04:44.220 [info] Fetched content exclusion rules for 2 repo(s) in 1765ms
2026-08-27 07:04:44.220 [info] ccreq:e2ef935d.copilotmd | markdown
2026-08-27 07:04:44.300 [info] Successfully activated the GitHub.vscode-pull-request-github extension.
2026-08-27 07:04:44.300 [info] [githubTitleAndDescriptionProvider] Initializing GitHub PR title and description provider provider.
2026-08-27 07:04:44.300 [info] Successfully registered GitHub PR title and description provider.
2026-08-27 07:04:44.300 [info] Successfully registered GitHub PR reviewer comments provider.
2026-08-27 07:04:48.100 [info] ConversationFeature: BYOK models available
2026-08-27 07:04:48.100 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:12.835 [info] Logged in as daantimmer
2026-08-27 07:06:13.376 [info] Got Copilot token for daantimmer
2026-08-27 07:06:13.377 [info] Copilot Chat: 0.63.0, VS Code: 1.135.0
2026-08-27 07:06:13.413 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.415 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.417 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.418 [info] AuthenticationService: firing onDidAuthenticationChange from handleAuthChangeEvent identity change. Has token: true
2026-08-27 07:06:13.418 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.433 [info] AuthenticationService: firing onDidAuthenticationChange from handleAuthChangeEvent identity change. Has token: true
2026-08-27 07:06:13.433 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.438 [info] AuthenticationService: firing onDidAuthenticationChange from handleAuthChangeEvent identity change. Has token: true
2026-08-27 07:06:13.438 [info] copilot token sku: copilot_for_business_seat_quota
2026-08-27 07:06:13.443 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:06:13.454 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:06:13.455 [warning] Copilot preview features are disabled by organizational policy. Learn more: https://aka.ms/github-copilot-org-enable-features
2026-08-27 07:06:13.568 [info] Fetched model metadata in 164ms c6ceafee-0c20-46ba-9fee-1ba38514b426
2026-08-27 07:06:13.577 [info] ccreq:983176fb.copilotmd | markdown
```

Steps to Reproduce:

1. Open new vscode instance with a devcontainer
2. Get presented with a login window

Description:

Since monday the 24th of August I am faced with this same issue. Every new vscode instance* I start I get presented with the following window:

*) not _every_ vscode instance. Only those with a devcontainer. When I close and re-open the window I am presented with this login. Opening a new devcontainer or old doesn't matter. Multiple instances with multiple containers always show the login window. Closing the window without logging in does not prevent me from using Copilot