Copilot global memory not syncing across devices for same user

Type: Bug

I am seeing a reproducible cross-device sync failure for Copilot global memory.

Environment

Same GitHub user on both devices: annetteTheissen
Copilot status: Ready on both devices
VS Code version identical on both devices:
1.128.0 (user setup), commit fc3def6774c76082adf699d366f31a557ce5573f
Active profile: Default on both devices
Repro steps

On device A, create global memory file sync-a2-2026-07-11.md with token A2-7KQ9.
On device B, list global memories and try to open sync-a2-2026-07-11.md.
Device B does not show file/token from A.
Inverse behavior also observed earlier: files visible on B were not visible on A.
Expected
Global memory is shared across devices for the same signed-in user.

Actual
Each device appears to have a different global memory set.

Impact
Cross-device continuity fails and prevents reliable use of Copilot memory.

VS Code version: Code 1.128.0 (fc3def6774c76082adf699d366f31a557ce5573f, 2026-07-07T15:14:24-07:00)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|AMD Ryzen 7 5825U with Radeon Graphics (16 x 1996)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x1002, DEVICE=0x15e7 [AMD Radeon (TM) Graphics], DRIVER_VENDOR=AMD, DRIVER_VERSION=31.0.12027.9001 *ACTIVE*
GPU1: VENDOR= 0x1414, DEVICE=0x008c [Microsoft Basic Render Driver], DRIVER_VERSION=10.0.26100.8521
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)|27.92GB (14.57GB free)|
|Process Argv|--crash-reporter-id 90dc8651-f727-43b6-8681-7ee04cd5b90a|
|Screen Reader|no|
|VM|0%|
Extensions: none
A/B Experiments

```
vsliv368cf:30146710
pythonvspyt551:31249599
binariesv615:30325510
nativeloc1:31344060
dwcopilot:31170013
dwoutputs:31242946
copilot_t_ci:31333650
e5gg6876:31282496
pythonrdcb7:31342333
6518g693:31463988
aj953862:31281341
6abeh943:31336334
envsactivate1:31538736
gh487529:31544284
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
ge8j1254_inline_auto_hint_haiku:31490510
38bie571_auto:31478677
cp_cls_c_1081:31454833
conptydll_true:31498968
ia-use-proxy-models-svc:31452481
e9c30283:31461165
test_treatment2:31471001
c9b86496:31447327
capi_axe_098a3278:31544981
idci7584:31464702
e3e4d672:31494082
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
7e187181:31503455
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
ddid_t:31478206
hmra_i5g22:31518061
ja75b849:31547460
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
cdk-lw-on:31524445
f9bf7985:31543584
a1ije391_t:31540920
api_cot_off:31513532
hgf2d445:31529595
41836166:31537719
prpt_srch:31518468
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
d7b18187:31526828
nes-curr-leftover-1500:31538366
h561g132:31533256
sessions_5:31532894
ihg5j128:31534457
f412h606:31546039
7g2b5551:31542111
nes-nc-lc-nf:31546584

```