Local chat session missing from Sessions list after Windows restart

Type: Bug

VS Code: 1.131.0
OS: Windows
Session ID: cfd8c7c6-ebee-431e-affa-c3015c66b57f

After restarting Windows, a local chat session no longer appears in the
Sessions list, including with all status filters and Archived enabled.

The session file still exists under emptyWindowChatSessions, contains 51 valid
JSONL records, and has the custom title "Skill para entradas en JIRA".
The Copilot local session index also contains both conversation turns.
No related loading errors appear in the VS Code logs.

The chat was created in an empty window without a workspace.
It appears that the session content was persisted but its Sessions-list
registry entry was not.

VS Code version: Code 1.131.0 (e4c7e7b1d6d060162f4aa7f8225271b67ce1df75, 2026-07-28T10:51:25Z)
OS version: Windows_NT x64 10.0.26200
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|13th Gen Intel(R) Core(TM) i7-1355U (12 x 2611)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x8086, DEVICE=0xa7a1 [Intel(R) Iris(R) Xe Graphics], DRIVER_VENDOR=Intel, DRIVER_VERSION=32.0.101.7085 *ACTIVE*
GPU1: 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)|15.69GB (2.24GB free)|
|Process Argv|--crash-reporter-id a55000db-db54-4091-b803-03163ee5bfd2|
|Screen Reader|no|
|VM|0%|
Extensions (39)

Name|Identifier|Author|Version
---|---|---|---
ESLint|dbaeumer.vscode-eslint|dbaeumer|3.0.34
GitLens — Git supercharged|eamodio.gitlens|eamodio|18.3.0
Prettier - Code formatter|esbenp.prettier-vscode|esbenp|12.4.0
GitHub Codespaces|github.codespaces|GitHub|1.18.15
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|0.162.0
HashiCorp Terraform|hashicorp.terraform|hashicorp|2.40.0
REST Client|humao.rest-client|humao|0.25.1
Bicep|ms-azuretools.vscode-bicep|ms-azuretools|0.45.15
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
C# Dev Kit|ms-dotnettools.csdevkit|ms-dotnettools|3.20.199
C#|ms-dotnettools.csharp|ms-dotnettools|2.140.9
.NET Install Tool|ms-dotnettools.vscode-dotnet-runtime|ms-dotnettools|3.1.0
Azure Kubernetes Service (AKS)|ms-kubernetes-tools.vscode-aks-tools|ms-kubernetes-tools|2.3.0
Kubernetes|ms-kubernetes-tools.vscode-kubernetes-tools|ms-kubernetes-tools|1.4.1
Data Workspace|ms-mssql.data-workspace-vscode|ms-mssql|0.6.3
SQL Server (mssql)|ms-mssql.mssql|ms-mssql|1.44.1
SQL Bindings|ms-mssql.sql-bindings-vscode|ms-mssql|0.4.1
SQL Database Projects|ms-mssql.sql-database-projects-vscode|ms-mssql|1.6.2
PostgreSQL|ms-ossdata.vscode-pgsql|ms-ossdata|1.26.0
Playwright Test for VSCode|ms-playwright.playwright|ms-playwright|1.1.19
Python Debugger|ms-python.debugpy|ms-python|2026.6.0
Python|ms-python.python|ms-python|2026.4.0
Pylance|ms-python.vscode-pylance|ms-python|2026.3.1
Python Environments|ms-python.vscode-python-envs|ms-python|1.36.0
Dev Containers|ms-vscode-remote.remote-containers|ms-vscode-remote|0.466.0
Azure Repos|ms-vscode.azure-repos|ms-vscode|0.40.0
Remote Repositories|ms-vscode.remote-repositories|ms-vscode|0.42.0
Java|oracle.oracle-java|Oracle|26.0.0
Language Support for Java(TM) by Red Hat|redhat.java|redhat|1.55.0
YAML|redhat.vscode-yaml|redhat|1.24.0
SonarQube for IDE|sonarsource.sonarlint-vscode|SonarSource|5.6.0
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
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_t_1081:31454832
conptydll_true:31498968
e9c30283:31461165
test_treatment2:31471001
c9b86496:31447327
capico_a_098a3278:31555650
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
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
cdk-lw-on:31524445
f9bf7985:31543584
a1ije391_t:31540920
hgf2d445:31529595
41836166:31537719
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
gf14b233:31526830
nes-curr-leftover-1500:31538366
ahp-both-windows:31556933
h561g132:31533256
session_8:31532895
ihg5j128:31534457
f412h606:31551416
9gg7f176:31542112
max-result-20:31551156
5fe6f778:31554331
allow-none:31555437
6i51c363:31551401
c7c27ce7:31554789
nes-gb2-ctrl:31554343
8hc4g144:31558143
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
session-archive:31558132

```