Copilot chat overview shows number of lines added/removed when there is none

Type: Bug

It doesn't happen every time and I don't know what triggers it, but I will describe what I do and how it looks.

I work in different chat sessions, going back and forth. I let Copilot do changes to code. This is how many developer work, nothing special. Sometimes I forget to "keep" changes made by Copilot, but eventually I click "keep". When I'm in a session, I don't see any changed files after clicking "Keep". If I go back to chat session list/overview, I see my chat has changes not kept. When I go in to this chat session, the chat does not display any changes that are not kept.

Attached screenshots of the same chat session.
this image is showing changes are pending / not "kept"

The chat session no longer shows changes as they were "kept"

The chat session list/overview doesn't seem to keep up with state of chat session.

VS Code version: Code 1.133.0 (a5b500951314efd502d07465bd138dfbd714a960, 2026-08-11T22:14:08Z)
OS version: Windows_NT x64 10.0.26200
Modes:

Extensions (38)

Name|Identifier|Author|Version
---|---|---|---
Markdown Preview Mermaid Support|bierner.markdown-mermaid|bierner|1.32.1
ESLint|dbaeumer.vscode-eslint|dbaeumer|3.0.34
Prettier - Code formatter|esbenp.prettier-vscode|esbenp|12.4.0
Apex Log Analyzer|financialforce.lana|FinancialForce|1.20.1
GraphQL: Syntax Highlighting|graphql.vscode-graphql-syntax|GraphQL|1.3.10
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
PowerShell|ms-vscode.powershell|ms-vscode|2025.4.0
Qwen Code Companion|qwenlm.qwen-code-vscode-ide-companion|qwenlm|0.21.11
XML|redhat.vscode-xml|redhat|0.29.3
Agent Script|salesforce.agent-script-language-client|Salesforce|2.8.0
Agentforce Vibes Autocomplete|salesforce.agentforce-vibes-autocomplete|salesforce|1.0.0
Salesforce Apex Language Server (Typescript)|salesforce.apex-language-server-extension|salesforce|0.8.0
SLDS Validator|salesforce.salesforce-vscode-slds|salesforce|2.0.12
Agentforce Vibes|salesforce.salesforcedx-einstein-gpt|salesforce|4.25.0
Metadata Visualizer|salesforce.salesforcedx-metadata-visualizer-vscode|salesforce|1.3.0
Salesforce Extension Pack|salesforce.salesforcedx-vscode|salesforce|67.7.1
Agentforce DX|salesforce.salesforcedx-vscode-agents|Salesforce|1.17.2
Apex|salesforce.salesforcedx-vscode-apex|salesforce|67.7.1
Apex Interactive Debugger|salesforce.salesforcedx-vscode-apex-debugger|salesforce|67.7.1
Salesforce Apex Log|salesforce.salesforcedx-vscode-apex-log|salesforce|67.7.1
Apex OpenAPI Specification|salesforce.salesforcedx-vscode-apex-oas|salesforce|67.7.1
Apex Replay Debugger|salesforce.salesforcedx-vscode-apex-replay-debugger|salesforce|67.7.1
Apex Testing|salesforce.salesforcedx-vscode-apex-testing|salesforce|67.7.1
Salesforce CLI|salesforce.salesforcedx-vscode-core|salesforce|67.7.1
Salesforce Extension Pack (Expanded)|salesforce.salesforcedx-vscode-expanded|salesforce|67.7.1
Aura Components|salesforce.salesforcedx-vscode-lightning|salesforce|67.7.1
Lightning Web Components|salesforce.salesforcedx-vscode-lwc|salesforce|67.7.1
Salesforce Metadata|salesforce.salesforcedx-vscode-metadata|salesforce|67.7.1
Salesforce Org Management|salesforce.salesforcedx-vscode-org|salesforce|67.7.1
Salesforce Org Browser|salesforce.salesforcedx-vscode-org-browser|salesforce|67.7.1
Salesforce Services|salesforce.salesforcedx-vscode-services|salesforce|67.7.1
SOQL|salesforce.salesforcedx-vscode-soql|salesforce|67.7.1
Salesforce Live Preview|salesforce.salesforcedx-vscode-ui-preview|salesforce|1.4.0
Visualforce|salesforce.salesforcedx-vscode-visualforce|salesforce|67.7.1
Salesforce Code Analyzer|salesforce.sfdx-code-analyzer-vscode|salesforce|1.21.0
Vue (Official)|vue.volar|Vue|3.3.9

A/B Experiments

```
vsliv368:30146709
pythonvspyt551cf:31249601
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
839jf696:31457053
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
8hhj4413:31478653
ge8j1254_inline_auto_hint_haiku:31490510
cp_cls_c_1081:31454833
conptydll_true:31498968
e9c30283:31461165
test_treatment2:31471001
c9b86496:31447327
ei9d7968:31496641
nes-extended-on:31455476
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
h08i8180:31475369
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
56dj4588:31512888
32d76977:31512328
ha629193:31508444
cdk-lw-on:31524445
jh5f2457_c:31540921
hgf2d445:31529595
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
5fe6f778:31554331
allow-none:31555437
fd5dc207:31551400
ac562147:31564510
c7c27ce7:31554789
1h923230:31564177
1532g621_copy:31554320
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
switchtoauto:31559321
0c1h4866:31564789
vrbsty_fls:31561059
session-archive:31558132
5b8j3302:31564601

```