Github Copilot Chat stuck in "working". Stop fails. #286448
Description
Type: Bug
Happens on many prompts. Logs show
2026-01-07 14:34:28.408 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/c-logging.
2026-01-07 14:34:28.409 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/ctest.
2026-01-07 14:34:28.409 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/umock-c.
2026-01-07 14:34:28.410 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/clds.
2026-01-07 14:34:28.411 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/macro-utils-c.
2026-01-07 14:37:46.180 [error] CodeSearchWorkspaceDiff: Failed to get new diff for file:///c%3A/Users/paaggarwal/r/zrpc/deps/c-logging.
I have a set up where my root repo contains git submodule in a deps/ folder. Each submodule is checked out to a fixed commit (submodule is not on a branch, it is in detached HEAD state).
Extension version: 0.35.3
VS Code version: Code 1.107.1 (994fd12, 2025-12-17T14:15:14.850Z)
OS version: Windows_NT x64 10.0.26200
Modes:
System Info
| Item | Value |
|---|---|
| CPUs | AMD EPYC 7763 64-Core Processor (16 x 2445) |
| GPU Status | 2d_canvas: unavailable_software direct_rendering_display_compositor: disabled_off_ok gpu_compositing: disabled_software multiple_raster_threads: enabled_on opengl: disabled_off rasterization: disabled_software raw_draw: disabled_off_ok skia_graphite: disabled_off trees_in_viz: disabled_off video_decode: disabled_software video_encode: disabled_software webgl: unavailable_software webgl2: unavailable_software webgpu: unavailable_software webnn: unavailable_software |
| Load (avg) | undefined |
| Memory (System) | 63.95GB (34.05GB free) |
| Process Argv | --crash-reporter-id ffc8440b-d8a1-4853-bc6d-1d25db852918 |
| 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
6518g693:31436602
aj953862:31281341
6abeh943:31336334
envsdeactivate2:31353495
cloudbuttont:31379625
aihoversummaries_t:31442084
3efgi100_wstrepl:31403338
use-responses-api:31390855
je187915:31401257
ec5jj548:31422691
metis_rerank_treatment1:31422731
terminalsuggestenabled:31431119
cmp-ext-treat:31426748
cp_cls_c_966_ss:31442353
c0683394:31419495
478ah919:31426797
ge8j1254_inline_auto_hint_haiku:31431912
a5gib710:31434435
5j92g670_sonnet:31434465
request_with_suggest:31435827
rename_enabled:31436409
nes-joint-0:31438277
7a04d226_do_not_restore_last_panel_session:31438103
anthropic_thinking_t:31432745
406hc587_ask_agent:31428393
cp_cls_c_1081:31433293
copilot-nes-oct-trt:31432596
nes-slash-models-on:31441832
nes-set-to-on:31441941
a43f0575b:31442825