Plan - Start Plan With Autopilot doesn't go into agent mode reliably

Type: Bug

Periodically clicking that button results in the agent being stuck in plan mode. You have to toggle into plan and then back to agent by hand despite the UI showing agent mode.

VS Code version: Code 1.136.1 (a44adf7f53e00964ab890f9f8758a334f1fc15bc, 2026-09-03T05:06:41Z)
OS version: Darwin arm64 25.6.0
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|Apple M4 Max (16 x 2400)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x106b [Google Inc. (Apple)], DEVICE=0x0000 [ANGLE (Apple, ANGLE Metal Renderer: Apple M4 Max, Version 26.6.2 (Build 25G83))], DRIVER_VENDOR=Apple, DRIVER_VERSION=26.6.2 *ACTIVE*
Machine model name: Mac
Machine model version: 16.6
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: enabled_on
trees_in_viz: disabled_off
video_decode: enabled
video_encode: enabled
webgl: enabled
webgpu: enabled
webnn: disabled_off|
|Load (avg)|18, 27, 48|
|Memory (System)|128.00GB (0.15GB free)|
|Process Argv|--crash-reporter-id b158999a-7315-44fd-9451-2d1adf5c9f3b|
|Screen Reader|no|
|VM|0%|
Extensions (29)

Name|Identifier|Author|Version
---|---|---|---
Dart|dart-code.dart-code|Dart-Code|3.142.0
Flutter|dart-code.flutter|Dart-Code|3.142.0
markdownlint|davidanson.vscode-markdownlint|DavidAnson|0.62.1
Better Todo Tree|fanaticpythoner.better-todo-tree|FanaticPythoner|1.3.4
Kotlin|fwcd.kotlin|fwcd|0.2.36
HTML Preview|george-alisson.html-preview-vscode|george-alisson|0.2.5
GitHub Repositories|github.remotehub|GitHub|0.64.0
GitHub Actions|github.vscode-github-actions|github|0.32.3
GitHub Pull Requests|github.vscode-pull-request-github|GitHub|0.165.2026090204
Peacock|johnpapa.vscode-peacock|johnpapa|4.3.4
LLDB DAP|llvm-vs-code-extensions.lldb-dap|llvm-vs-code-extensions|0.4.1
Flutter Intl|localizely.flutter-intl|localizely|1.19.3
GitHub Copilot for Azure|ms-azuretools.vscode-azure-github-copilot|ms-azuretools|1.0.231
Azure MCP Server|ms-azuretools.vscode-azure-mcp-server|ms-azuretools|2.0.46
Azure Resources|ms-azuretools.vscode-azureresourcegroups|ms-azuretools|0.12.7
Azure Repos|ms-vscode.azure-repos|ms-vscode|0.40.0
Remote Repositories|ms-vscode.remote-repositories|ms-vscode|0.42.0
Chat Customizations Evaluations|ms-vscode.vscode-chat-customizations-evaluations|ms-vscode|1.0.8
Foundry Toolkit for VS Code|ms-windows-ai-studio.windows-ai-studio|ms-windows-ai-studio|1.6.11
DebugMCP — Agentic Debugging for VS Code, Cursor & More|ozzafar.debugmcpextension|ozzafar|2.3.4
Version Lens|pflannery.vscode-versionlens|pflannery|1.28.0
Material Icon Theme|pkief.material-icon-theme|PKief|5.38.1
Language Support for Java(TM) by Red Hat|redhat.java|redhat|1.56.0
git-autoconfig|shyykoserhiy.git-autoconfig|shyykoserhiy|0.0.2
Code Spell Checker|streetsidesoftware.code-spell-checker|streetsidesoftware|4.7.3
Swift|swiftlang.swift-vscode|swiftlang|2.16.7
Gradle for Java|vscjava.vscode-gradle|vscjava|3.18.0
Project Manager for Java|vscjava.vscode-java-dependency|vscjava|0.27.6
Maven for Java|vscjava.vscode-maven|vscjava|0.45.3

A/B Experiments

```
vsliv368cf:30146710
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
4f60g487:31327383
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
diffpatch-lysithea-24-production:31577962
cp_cls_t_966_ss:31526232
4je02754:31572277
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_t_1081:31454832
conptydll_true:31498968
e9c30283:31461165
c9b86496:31447327
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ddid_t:31478206
hmra_i5g22:31518061
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
j0d79568:31499440
jb_cp_cls_t_632:31543129
56dj4588:31512888
32d76977:31512328
ha629193:31508444
a1ije391_t:31540920
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
gf14b233:31526830
ahp-both-windows:31556933
ihg5j128:31534457
7g2b5551:31542111
sandbox-ui-on-2:31543161
enable_editor_pane_layout:31569726
allow-none:31555437
ac562147:31564510
c7c27ce7:31554789
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
switchtoauto:31559321
0c1h4866:31566224
vrbsty_fls:31561059
session-mark-done:31558131
5b8j3302:31564601
mangle-name-control:31572633
39a5d156:31574986
2bfb8b39:31576696
permission_prompt_treatment:1332566
ccr_pr_nudge_adoption:1319471
vsc_wsm_c:1340633
jidc7660:1370295
auto_mode_treatment:1367907
h5e14506_copy:1348995

```