Selection is not highlighted in the SCSS files with modification on it

Type: Bug

Selction is not highlighted in the Diff mode

VS Code version: Code 1.136.1 (a44adf7f53e00964ab890f9f8758a334f1fc15bc, 2026-09-03T05:06:41Z)
OS version: Windows_NT x64 10.0.26100
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) Ultra 7 165H (22 x 3072)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x10de, DEVICE=0x28b8 [NVIDIA RTX 2000 Ada Generation Laptop GPU], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=32.0.15.9658 *ACTIVE*
GPU1: VENDOR= 0x8086, DEVICE=0x7dd5 [Intel(R) Graphics], DRIVER_VERSION=32.0.101.8517
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)|31.45GB (8.42GB free)|
|Process Argv|C:\\Users\\SESA819901\\Documents\\Workspace\\UI\\UI.code-workspace --crash-reporter-id 3fee7b8a-1565-4ddd-aed9-996c0afd9ef5|
|Screen Reader|no|
|VM|0%|
Extensions (51)

Name|Identifier|Author|Version
---|---|---|---
ZipFS - a zip file system|arcanis.vscode-zipfs|arcanis|3.0.0
All Autocomplete|atishay-jain.all-autocomplete|Atishay-Jain|0.0.26
BEM Helper|box-of-hats.bemhelper|Box-Of-Hats|2.0.0
Tailwind CSS IntelliSense|bradlc.vscode-tailwindcss|bradlc|0.16.0
Simple React Snippets|burkeholland.simple-react-snippets|burkeholland|1.2.8
Turbo Console Log|chakrounanas.turbo-console-log|ChakrounAnas|3.28.0
npm Intellisense|christian-kohler.npm-intellisense|christian-kohler|1.4.5
Path Intellisense|christian-kohler.path-intellisense|christian-kohler|2.10.0
Package Json Upgrade|codeandstuff.package-json-upgrade|codeandstuff|3.7.0
markdownlint|davidanson.vscode-markdownlint|DavidAnson|0.62.1
Git History|donjayamanne.githistory|donjayamanne|0.6.20
ES7+ React/Redux/React-Native snippets|dsznajder.es7-react-js-snippets|dsznajder|4.4.3
GitLens — Git supercharged|eamodio.gitlens|eamodio|19.1.0
Restore Terminals|ethansk.restore-terminals|EthanSK|1.1.11
Figma for VS Code|figma.figma-vscode-extension|figma|0.4.5
Auto Close Tag|formulahendry.auto-close-tag|formulahendry|0.5.15
GitHub Pull Requests|github.vscode-pull-request-github|GitHub|0.164.0
HVE Core|ise-hve-essentials.hve-core|ise-hve-essentials|3.3.101
HVE Core - All|ise-hve-essentials.hve-core-all|ise-hve-essentials|3.2.2
HVE Core - HVE Core Installer|ise-hve-essentials.hve-installer|ise-hve-essentials|3.2.2
Git Worktree Manager|jackiotyu.git-worktree-manager|jackiotyu|3.28.0
Workspace Terminals|joshx.workspace-terminals|joshx|0.3.4
DotENV|mikestead.dotenv|mikestead|1.0.1
Azure Load Testing|ms-azure-load-testing.microsoft-testing|ms-azure-load-testing|0.2.0
Azure Developer CLI|ms-azuretools.azure-dev|ms-azuretools|0.10.0
GitHub Copilot for Azure|ms-azuretools.vscode-azure-github-copilot|ms-azuretools|1.0.231
Azure MCP Server|ms-azuretools.vscode-azure-mcp-server|ms-azuretools|2.0.46
Azure App Service|ms-azuretools.vscode-azureappservice|ms-azuretools|0.27.0
Azure Container Apps|ms-azuretools.vscode-azurecontainerapps|ms-azuretools|0.11.2
Azure Functions|ms-azuretools.vscode-azurefunctions|ms-azuretools|1.22.1
Azure Resources|ms-azuretools.vscode-azureresourcegroups|ms-azuretools|0.12.7
Azure Static Web Apps|ms-azuretools.vscode-azurestaticwebapps|ms-azuretools|0.13.3
Azure Storage|ms-azuretools.vscode-azurestorage|ms-azuretools|0.17.2
Azure Virtual Machines|ms-azuretools.vscode-azurevirtualmachines|ms-azuretools|0.6.11
Azure Cosmos DB|ms-azuretools.vscode-cosmosdb|ms-azuretools|0.36.2
Microsoft Edge Tools for VS Code|ms-edgedevtools.vscode-edge-devtools|ms-edgedevtools|2.1.10
Playwright Test for VSCode|ms-playwright.playwright|ms-playwright|1.1.19
Chat Customizations Evaluations|ms-vscode.vscode-chat-customizations-evaluations|ms-vscode|1.0.8
Azure Tools|ms-vscode.vscode-node-azure-pack|ms-vscode|1.8.2
VS Code Speech|ms-vscode.vscode-speech|ms-vscode|0.16.0
JavaScript and TypeScript Nightly|ms-vscode.vscode-typescript-next|ms-vscode|6.0.20260416
indent-rainbow|oderwat.indent-rainbow|oderwat|8.3.1
Ollama|ollama.ollama|Ollama|0.0.8
Jest|orta.vscode-jest|Orta|6.4.4
Copy Branch Name|pkief.copy-branch-name|PKief|1.2.0
Sort JSON objects|richie5um2.vscode-sort-json|richie5um2|1.20.0
Sass (.sass only)|syler.sass-indented|syler|1.8.33
open in browser|techer.open-in-browser|techer|2.0.0
React Standard Style code snippets|timonvs.reactsnippetsstandard|TimonVS|1.1.0
TypeScript 7|typescriptteam.native-preview|TypeScriptTeam|0.20260708.2
TODO Highlight|wayou.vscode-todo-highlight|wayou|1.0.5

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
4f60g487:31327383
envsactivate1:31551504
cloudbuttont:31379625
3efgi100_wstrepl:31403338
ec5jj548:31422691
diffpatch-lysithea-24-production:31579162
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
ei9d7968:31496641
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ec1eg703:31520046
ddid_t:31478206
hmra_i5g22:31518061
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
jh5f2457_c:31540921
jbcp_cls_pctr_t:31531130
cp_intellij_t_nes:31548657
d7b18187:31526828
ahp-both-windows:31556933
ihg5j128:31534457
7g2b5551:31542111
enable_editor_pane_layout:31569726
allow-none:31555437
ac562147:31564510
c7c27ce7:31554789
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
a1hcc538:31559322
0c1h4866:31566224
vrbsty_tr:31561058
session-mark-done:31558131
5b8j3302:31564601
mangle-name-treatment:31572634
multiv2:31574985
2bfb8b39:31576696
permission_prompt_treatment:1332566
ccr_pr_nudge_control:1319470
vsc_wsm_c:1340633
jidc7660:1370295
auto_mode_treatment:1367907
1g5a5742:1379227

```