Agent mode switches itself to plan mode and then can never get out.

[JohnGalt1717]

Type: Bug

If you induce what the AI thinks is planning it will switch itself into plan mode.

Then when you click start implementation, it will be broken and wont' be able to get out of plan mode even if you set agent mode manually.

VS Code version: Code 1.134.0 (110a328, 2026-08-18T18:24:44Z)
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)	11, 13, 15
Memory (System)	128.00GB (0.54GB free)
Process Argv	--crash-reporter-id b158999a-7315-44fd-9451-2d1adf5c9f3b
Screen Reader	no
VM	0%