Copilot turns itself on (excluded filetypes)

[ekboehm]

Type: Bug

1. Disable Copilot for a particular language (e.g. Markdown) by either editing the Preferences JSON or using the bottom bar.
2. Switch to file of that type (e.g. Markdown). Sometimes it takes more than one back and forth between a file type for which I intend to use Copilot (e.g. Julia, Python) and one I do not (e.g. Latex, Markdown)

Extension version: 0.37.8
VS Code version: Code 1.109.5 (Universal) (0725862, 2026-02-19T19:43:32.382Z)
OS version: Darwin arm64 24.6.0
Modes:

Logs

Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [NES][Triggerer][onDidChangeTextEditorSelection][editorSwitch] document switch disabled
Trace: [NES][Triggerer][onDidChangeTextEditorSelection] Return: no recent edit
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Trace: [Diagnostics] got diagnostics 
Trace: [Diagnostics] got diagnostics 
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Trace: [CopilotCLI] [DIFF] getActiveDiffByTab: tab is not a diff tab
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Trace: [Diagnostics] got diagnostics 
Trace: [Diagnostics] got diagnostics 
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Debug: [context keys] Window state change. Needs offline check: false, active: false, focused: false.
Trace: CodeSearchChunkSearch.updateIndexedCommitForAllRepos
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [GithubAccountFilterProvider]::getFilters SKU: free_faculty_quota, Internal Org: undefined, IsFcv1: false, IsVscodeTeamMember: false
Trace: [RelatedExtensionsFilterProvider]::getFilters looking up related extensions
Trace: [RelatedExtensionsFilterProvider]::getFilters Filters: [["X-Copilot-RelatedPluginVersion-mspythonpython","2026.2.0"],["X-Copilot-RelatedPluginVersion-mspythonvscodepylance","2026.1.1"],["X-Copilot-RelatedPluginVersion-vscodetypescriptlanguagefeatures","1.0.0"]]
Trace: [CopilotExtensionsFilterProvider]::getFilters Copilot Extension Version: undefined, Copilot Chat Extension Version: 0.37.8, Completions Core Version: 1.378.1799
Trace: [CopilotCompletionsFilterProvider]::getFilters Filters: [["X-VSCode-ExtensionRelease","stable"],["X-Copilot-ClientVersion","0.37.8"],["X-Copilot-CopilotTrackingId","8e90c0a51339e347691bff2304f1e1d0"],["X-Copilot-Engine","gpt-41-copilot"]]
Trace: [PlatformAndReleaseDateFilterProvider]::getFilters Filters: [["X-VSCode-Platform","Mac"],["X-VSCode-ReleaseDate","2026021919"]]
Trace: CodeSearchChunkSearch.updateIndexedCommitForAllRepos
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Trace: [NES][Triggerer][onDidChangeTextDocument] Return: ignored document
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Trace: CodeSearchChunkSearch.updateIndexedCommitForAllRepos
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: false, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: false, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: false.
Debug: [context keys] Window state change. Needs offline check: false, active: true, focused: true.
Trace: CodeSearchChunkSearch.updateIndexedCommitForAllRepos

Request IDs

ab2cb722-76ae-4e06-a117-a9c3b36fb022
38caab2c-cd50-4b58-8d43-f1442b687618
56a06719-e152-41d3-a61d-4d1b0766b24e
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c2690fd4-2704-43e3-912c-4b01ef4c1eec
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2d6b3a4f-3e22-4b9f-853b-66e37747850c
0e3563f6-7200-4d72-977d-62082d3b3e41

System Info

Item	Value
CPUs	Apple M2 Ultra (24 x 2400)
GPU Status	2d_canvas: enabled GPU0: VENDOR= 0x106b [Google Inc. (Apple)], DEVICE=0x0000 [ANGLE (Apple, ANGLE Metal Renderer: Apple M2 Ultra, Version 15.7.4 (Build 24G517))], DRIVER_VENDOR=Apple, DRIVER_VERSION=15.7.4 ACTIVE Machine model name: Mac Machine model version: 14.14 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 webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	3, 2, 2
Memory (System)	128.00GB (29.38GB free)
Process Argv	--crash-reporter-id 86273d27-4fa2-473e-aa4d-398e03cf2185
Screen Reader	no
VM	0%

A/B Experiments

vsliv368cf:30146710
vswsl492:30256859
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31464700
cloudbuttont:31379625
aihoversummaries_t:31453032
3efgi100_wstrepl:31403338
839jf696:31457053
use-responses-api:31390855
je187915:31454425
ec5jj548:31422691
cp_cls_t_966_ss:31454198
ge8j1254_inline_auto_hint_haiku:31427726
nes-autoexp-10:31446583
a5gib710:31434435
38bie571_auto:31426784
7a04d226_do_not_restore_last_panel_session:31438103
31c7i317_no_change:31465101
cp_cls_c_1081:31454833
copilot-nes-oct-trt:31432596
ia-use-proxy-models-svc:31452481
a43f0574:31442827
e9c30283:31461165
nes-fast-additive:31462666
subagent_3ccgc321:31467997
idci7584:31464702
edit_mode_hidden:31461530
showstats:31457174
864ei723_large_tool_results_to_disk:31460878
showingstats:31457202
b1f5h706:31458075
nes-extended-on:31455476
chat:31457767
i2gc6536:31468511

[ekboehm]

GIF attached here

[benibenj]

Can you check in the settings editor and see if the setting is being overwritten somewhere else? The setting should still be working correctly, but you might have the setting overwritten by the workspace.

[ekboehm]

This is what I see

The rest of my settings are as follows

VSCode settings.json

{
    "update.channel": "none",
    "update.mode": "manual",
    "editor.fontFamily": "Fira Code, Menlo, Monaco, 'Courier New', monospace",
    "editor.fontLigatures": true,
    "r.plot.useHttpgd": true,
    "terminal.integrated.commandsToSkipShell": [
        "language-julia.interrupt",
        "matlab.interrupt"
    ],
    "julia.symbolCacheDownload": true,
    "julia.enableTelemetry": false,
    "julia.execution.inlineResultsForCellEvaluation": true,
    // "julia.NumThreads": 16,
    "julia.additionalArgs": ["--threads=auto,1"],
    "julia.execution.resultType": "REPL",
    "julia.execution.codeInREPL": true,
    "editor.unicodeHighlight.allowedCharacters": {
        "α": true
    },
    "security.workspace.trust.untrustedFiles": "open",
    "editor.unicodeHighlight.ambiguousCharacters": false,
    "[markdown]": {
        "editor.inlineSuggest.suppressSuggestions": true
    },
    "latex-workshop.latex.tools": [
        {
            "name": "latexmk",
            "command": "latexmk",
            "args": [
                "-synctex=1",
                "-interaction=nonstopmode",
                "-file-line-error",
                "-pdf",
                "-outdir=%OUTDIR%",
                "%DOC%"
            ],
            "env": {}
        },
        {
            "name": "lualatexmk",
            "command": "latexmk",
            "args": [
                "-synctex=1",
                "-interaction=nonstopmode",
                "-file-line-error",
                "-lualatex",
                "-outdir=%OUTDIR%",
                "%DOC%"
            ],
            "env": {}
        },
        {
            "name": "xelatexmk",
            "command": "latexmk",
            "args": [
                "-synctex=1",
                "-interaction=nonstopmode",
                "-file-line-error",
                "-xelatex",
                "-outdir=%OUTDIR%",
                "%DOC%"
            ],
            "env": {}
        },
        {
            "name": "latexmk_rconly",
            "command": "latexmk",
            "args": [
                "%DOC%"
            ],
            "env": {}
        },
        {
            "name": "pdflatex",
            "command": "pdflatex",
            "args": [
                "-synctex=1",
                "-interaction=nonstopmode",
                "-file-line-error",
                "%DOC%"
            ],
            "env": {}
        },
        {
            "name": "bibtex",
            "command": "bibtex",
            "args": [
                "%DOCFILE%"
            ],
            "env": {}
        },
        {
            "name": "rnw2tex",
            "command": "Rscript",
            "args": [
                "-e",
                "knitr::opts_knit$set(concordance = TRUE); knitr::knit('%DOCFILE_EXT%')"
            ],
            "env": {}
        },
        {
            "name": "jnw2tex",
            "command": "julia",
            "args": [
                "-e",
                "using Weave; weave(\"%DOC_EXT%\", doctype=\"tex\")"
            ],
            "env": {}
        },
        {
            "name": "jnw2texminted",
            "command": "julia",
            "args": [
                "-e",
                "using Weave; weave(\"%DOC_EXT%\", doctype=\"texminted\")"
            ],
            "env": {}
        },
        {
            "name": "pnw2tex",
            "command": "pweave",
            "args": [
                "-f",
                "tex",
                "%DOC_EXT%"
            ],
            "env": {}
        },
        {
            "name": "pnw2texminted",
            "command": "pweave",
            "args": [
                "-f",
                "texminted",
                "%DOC_EXT%"
            ],
            "env": {}
        },
        {
            "name": "tectonic",
            "command": "tectonic",
            "args": [
                "--synctex",
                "--keep-logs",
                "--print",
                "%DOC%.tex"
            ],
            "env": {}
        }
    ],
    "editor.acceptSuggestionOnEnter": "off",
    "inlineChat.lineNaturalLanguageHint": false,
    "github.copilot.enable": {
        "*": false,
        "plaintext": true,
        "markdown": false,
        "scminput": false,
        "latex": false,
        "stata": true,
        "julia": true,
        "shellscript": true,
        "jsonc": false,
        "clojure": true,
        "tex": true,
        "latex-package": true,
        "python": false,
        "r": true
    },
    "github.copilot.excludeLanguages": [
        "latex"
    ],
    "github.copilot.nextEditSuggestions.enabled": true,
    "r.sessionMode": "dedicated",
    "r.sessionWatcher": true,
    "r.bracketedPaste": false,
    "julia.useRevise": false
}