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Custom instructions sometimes removed during summarization #264416

@thelastWallE

Description

@thelastWallE

Type: Bug

Choose agent mode and any llm. Use the generate instructions functionality or any prompt. I get only standard answer like:

I can see you have a Schichtplaner (shift planner) application with both a main SvelteKit app and an authentication server. Based on the workspace structure, this appears to be a web application for managing work shifts.

What would you like to do with your project? Here are some common tasks I can help you with:

Development: Start the development server to work on the app
Building: Build the application for production
Testing: Run tests or help set up testing
Code Review: Look at specific files or functionality
Deployment: Help with Docker deployment or server setup
Features: Add new functionality or modify existing features
You have several pre-configured tasks available:

Launch Dev (development server)
Build App (production build)
Preview App (preview production build)
Start App (run built application)
SSH: Build Application (remote build)
What specific task would you like to work on?

It is like it is not sending any instructions for copilot.
I tried different things and in the logfile for copilot in the analyse section it stated that the user was not giving any instructions.

Extension version: 0.30.3
VS Code version: Code 1.103.2 (6f17636, 2025-08-20T16:45:34.255Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info
Item Value
CPUs Intel(R) Core(TM) i5-9500T CPU @ 2.20GHz (6 x 2208)
GPU Status 2d_canvas: enabled
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled
webnn: disabled_off
Load (avg) undefined
Memory (System) 7.84GB (0.89GB free)
Process Argv --crash-reporter-id 87474dfb-fa28-4b59-b0dd-3579f1e5d207
Screen Reader no
VM 0%
A/B Experiments
vsliv368cf:30146710
binariesv615:30325510
vscrp:30673768
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
996jf627:31283433
pythonrdcb7:31342333
usemplatestapi:31297334
747dc170:31275177
aj953862:31281341
nesew2to5:31336538
agentclaude:31350858
nes-set-on:31351930
onetestforazureexpcf:31335614
6abeh943:31336334
0927b901:31350571
ji9b5146:31348712
custommodelcf:31371783
test_t_test:31369249
45650338:31358607
0cj2b977:31352657
justeven_python:31371804
gaj49834:31362110
controlchatstate:31363048
cloudbuttonc:31374191
retryenabled:31370050
3efgi100_wstrepl:31374188
mo_5r_a:31377248

Output from the extension:
2025-09-01 23:36:23.917 [info] Logged in as thelastWallE
2025-09-01 23:36:24.736 [info] Got Copilot token for thelastWallE
2025-09-01 23:36:24.793 [info] copilot token chat_enabled: true, sku: monthly_subscriber_quota
2025-09-01 23:36:24.969 [info] BYOK: Copilot Chat known models list fetched successfully.
2025-09-01 23:36:24.994 [error] GithubCodeSearchService.getRemoteIndexState(ednasmartfactory/auth-server-edna). Failed to fetch indexing status. Response: 404. {"message":"Not Found","documentation_url":"https://docs.github.com/rest","status":"404"}
2025-09-01 23:36:25.250 [info] Fetched model metadata in 1433ms 7a3765e7-361e-4a12-a650-9e1d96e214f2
2025-09-01 23:36:25.435 [info] GitHub.vscode-pull-request-github extension is not yet activated.
2025-09-01 23:36:25.435 [warning] GitHub.vscode-pull-request-github extension API is not available.
2025-09-01 23:36:25.896 [info] [ConversationHistorySummarizer] [full] summarization prompt rendered in 9ms.
2025-09-01 23:36:44.540 [info] message 0 returned. finish reason: [stop]
2025-09-01 23:36:44.540 [info] request done: requestId: [9e617e52-d151-46ed-8600-16a884706f76] model deployment ID: []
2025-09-01 23:36:44.543 [info] ccreq:949478d5.copilotmd | success | claude-sonnet-4 | 18649ms | [summarizeConversationHistory-full]
2025-09-01 23:36:44.870 [info] GitHub.vscode-pull-request-github extension is not yet activated.
2025-09-01 23:36:44.870 [warning] GitHub.vscode-pull-request-github extension API is not available.
2025-09-01 23:36:44.892 [error] Error: No lowest priority node found (path: FA -> xF -> lse -> ISe -> g0 -> 1)
    at vSe (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:3:3790)
    at vSe (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:3:3906)
    at vSe (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:3:3906)
    at vSe (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:3:3906)
    at vSe (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:3:3906)
    at removeLowestPriorityChild (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:1:9647)
    at xe._getFinalElementTree (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:4:30771)
    at xe.renderRaw (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:4:29315)
    at xe.render (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:4:28978)
    at xe.render (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:543:4932)
    at mb.buildPrompt (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:801:2273)
    at buildPrompt (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:782:22646)
    at buildPrompt2 (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:701:19822)
    at bu.runOne (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:701:16038)
    at bu.run (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:701:13449)
    at Yh.runWithToolCalling (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:782:16167)
    at Yh.getResult (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:782:11544)
    at uW.getResult (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:790:5611)
    at F0.getResult (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:813:9173)
    at y8.z (c:\Users\ssamoray\.vscode\extensions\github.copilot-chat-0.30.3\dist\extension.js:2530:1616)
    at Uh.$invokeAgent (file:///c:/Users/ssamoray/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/api/node/extensionHostProcess.js:140:46951): [Agent] summarization failed
2025-09-01 23:36:44.905 [info] GitHub.vscode-pull-request-github extension is not yet activated.
2025-09-01 23:36:44.905 [warning] GitHub.vscode-pull-request-github extension API is not available.
2025-09-01 23:36:51.512 [info] message 0 returned. finish reason: [stop]
2025-09-01 23:36:51.513 [info] request done: requestId: [f5daed82-ba55-439f-a8c0-eecf85a784a9] model deployment ID: []
2025-09-01 23:36:51.514 [info] ccreq:f8966fcc.copilotmd | success | claude-sonnet-4 | 6592ms | [panel/editAgent]

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