AI diff showing is glitching

Type: Bug

I asked my AI assistant to modify comments, fixing typos, syntax and etc. Then I begin to fix some comments to follow my _code styling rules_ but AI diff render engine started to glitch, I dunno is it ok and how it works

Vid source:
https://drive.google.com/file/d/1_6N5XwpBiMqrX89WH67PVkIYAVBw6FJk/view?usp=sharing

VS Code version: Code 1.134.0 (110a328ea54b42367b803ec53ee0bf52ef26b419, 2026-08-18T18:24:44Z)
OS version: Linux x64 7.1.8-arch1-3
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|AMD Ryzen 5 5600 6-Core Processor (12 x 3551)|
|GPU Status|2d_canvas: enabled
GPU0: VENDOR= 0x10de [Google Inc. (NVIDIA Corporation)], DEVICE=0x2d83 [ANGLE (NVIDIA Corporation, NVIDIA GeForce RTX 5050/PCIe/SSE2, OpenGL ES 3.2 NVIDIA 610.57.04)], DRIVER_VENDOR=NVIDIA, DRIVER_VERSION=610.57.04 *ACTIVE*
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: disabled_software
vulkan: enabled_on
webgl: enabled
webgpu: enabled
webgpu_on_vk_via_gl_interop: enabled
webnn: disabled_off|
|Load (avg)|0, 1, 1|
|Memory (System)|15.49GB (8.07GB free)|
|Process Argv|--crash-reporter-id c73a39ad-a1e3-42a1-9546-402d4ea2fbe2|
|Screen Reader|no|
|VM|0%|
|DESKTOP_SESSION|plasma|
|XDG_CURRENT_DESKTOP|KDE|
|XDG_SESSION_DESKTOP|KDE|
|XDG_SESSION_TYPE|wayland|
Extensions (11)

Name|Identifier|Author|Version
---|---|---|---
Catppuccin for VSCode|catppuccin.catppuccin-vsc|Catppuccin|3.19.0
Office Viewer|cweijan.vscode-office|cweijan|4.2.0
GitHub Actions|github.vscode-github-actions|github|0.32.3
Container Tools|ms-azuretools.vscode-containers|ms-azuretools|2.4.5
Dev Containers|ms-vscode-remote.remote-containers|ms-vscode-remote|0.466.0
CMake Tools|ms-vscode.cmake-tools|ms-vscode|1.23.52
C/C++ DevTools|ms-vscode.cpp-devtools|ms-vscode|0.5.14
Makefile Tools|ms-vscode.makefile-tools|ms-vscode|0.12.17
rust-analyzer|rust-lang.rust-analyzer|rust-lang|0.3.3016
Even Better TOML|tamasfe.even-better-toml|tamasfe|0.21.2
Tauri|tauri-apps.tauri-vscode|tauri-apps|0.2.9

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
editstats-enabled:31346257
cloudbuttont:31379625
3efgi100_wstrepl:31403338
839jf696:31457053
ddidtcf:31399634
ec5jj548:31422691
cp_cls_t_966_ss:31526232
4je02754:31466945
c3h7c220:31478652
cp_cls_c_1081:31454833
conptydll_true:31498968
e9c30283:31461165
test_treatment2:31471001
c9b86496:31447327
capico_axe_098a3278:31555651
ei9d7968:31496641
chat:31457767
8hig5102:31480529
89g7j272:31518289
i2gc6536:31499202
52612955:31516516
ghj88844:31499326
ddid_t:31478206
hmra_i5g22:31518061
ie3bb177:31557831
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
jh5f2457_c:31540921
jbcp_cls_pctr_t:31531130
61138546:31518536
cp_intellij_t_nes:31548657
d7b18187:31526828
ahp-both-windows:31556933
session_8:31532895
hjji5903:31534458
f412h606:31551416
9gg7f176:31542112
sandbox-ui-on-2:31543161
nes-ex-cf-euporie-03:31542868
enable_editor_pane_layout:31569726
allow-none:31555437
6i51c363:31551401
ac562147:31564510
c7c27ce7:31554789
1h923230:31564177
0dg73464:31554319
treatment-23-1:31555779
unuse_dynamic_mcp:31555281
0d8dfbc3:31570291
0c1h4866:31566224
session-mark-done:31558131
5b8j3302:31564601
permission_prompt_treatment:1332566
ccr_pr_nudge_auto_review:1319472

```