vscode always uses Windows version of mcp.json even when connected to WSL

Type: Bug

I am working mainly within WSL and it would make sense if vscode editor and new agents window give ability to load mcp.json from WSL. The main reason is that it's a hassle to maintain both Windows and WSL version of this file. Also some local my mcp servers called by stdio only work in linux ..

VS Code version: Code 1.135.0 (08d4889f9ec4a1685d257b9b95de036c8e1ce1e5, 2026-08-25T14:26:52Z)
OS version: Windows_NT x64 10.0.26200
Modes:
Remote OS version: Linux x64 6.18.33.2-microsoft-standard-WSL2

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) Ultra 7 165H (22 x 3072)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0x7d55 [Intel(R) Arc(TM) Pro Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=32.0.101.8724 *ACTIVE*
GPU1: VENDOR= 0x10de, DEVICE=0x28b9 [NVIDIA RTX 1000 Ada Generation Laptop GPU], DRIVER_VERSION=32.0.15.9641
GPU2: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8875
Machine model name:
Machine model version:
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
webgpu: enabled
webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|31.46GB (9.21GB free)|
|Process Argv|--crash-reporter-id a13d0b74-f8c6-4263-b63f-0dcc9df80c04 --crash-reporter-id a13d0b74-f8c6-4263-b63f-0dcc9df80c04|
|Screen Reader|no|
|VM|0%|

|Item|Value|
|---|---|
|Remote|WSL: Ubuntu|
|OS|Linux x64 6.18.33.2-microsoft-standard-WSL2|
|CPUs|Intel(R) Core(TM) Ultra 7 165H (22 x 0)|
|Memory (System)|11.68GB (8.95GB free)|
|VM|0%|
Extensions (8)

Name|Identifier|Author|Version
---|---|---|---
WSL|ms-vscode-remote.remote-wsl|ms-vscode-remote|0.104.3
Language Support for Java(TM) by Red Hat|redhat.java|redhat|1.55.0
Gradle for Java|vscjava.vscode-gradle|vscjava|3.18.0
Debugger for Java|vscjava.vscode-java-debug|vscjava|0.59.0
Project Manager for Java|vscjava.vscode-java-dependency|vscjava|0.27.6
Extension Pack for Java|vscjava.vscode-java-pack|vscjava|0.31.1
Test Runner for Java|vscjava.vscode-java-test|vscjava|0.46.0
Maven for Java|vscjava.vscode-maven|vscjava|0.45.3

A/B Experiments

```
vsliv368:30146709
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ddidt:31399633
ec5jj548:31422691
diffpatch-lysithea-24-production:31574143
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_t_1081:31454832
conptydll_true:31498968
e9c30283:31461165
46204921:31447328
capico_axe_098a3278:31555651
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ddid_c:31478207
hmra_i5g22:31518061
ja75b849:31569110
7df3h592:31512476
cp_cls_t_1082:31535311
logging_enabled_new:31498466
db5d2638:31499441
jb_cp_cls_t_632:31543129
748c7209:31512887
32d76977:31512328
ha629193:31508444
a1ije391_t:31540920
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
jf4hg949:31526829
ahp-both-windows:31556933
sessions_5:31532894
ihg5j128:31534457
f412h606:31551416
9gg7f176:31542112
enable_editor_pane_layout:31569726
allow-none:31555437
36h42362:31564511
c7c27ce7:31554789
1h923230:31564177
1532g621_copy:31554320
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
9e5id457:31573761

```