Repository: vscode
Issue: Multiline cursor using ALT-Up and Down on number pad causes character to display after releasing keys
Labels: bug,editor-multicursor


Type: <b>Bug</b>

If you use ALT-Down or Alt-Up on number pad to create a multi-line cursor, the editor displays an alt character for each line that the cursor extends into once the keys are relased.   This only occurs when you use the number pad arrow keys.  It does not occur when you use the dedicated arrow keys on the keyboard.

VS Code version: Code 1.94.2 (384ff7382de624fb94dbaf6da11977bba1ecd427, 2024-10-09T16:08:44.566Z)
OS version: Windows_NT x64 10.0.19045
Modes:

<details>
<summary>System Info</summary>

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz (6 x 2712)|
|GPU Status|2d_canvas: unavailable_software<br>canvas_oop_rasterization: disabled_off<br>direct_rendering_display_compositor: disabled_off_ok<br>gpu_compositing: disabled_software<br>multiple_raster_threads: enabled_on<br>opengl: disabled_off<br>rasterization: disabled_software<br>raw_draw: disabled_off_ok<br>skia_graphite: disabled_off<br>video_decode: disabled_software<br>video_encode: disabled_software<br>vulkan: disabled_off<br>webgl: unavailable_software<br>webgl2: unavailable_software<br>webgpu: unavailable_software<br>webnn: disabled_off|
|Load (avg)|undefined|
|Memory (System)|8.00GB (4.23GB free)|
|Process Argv|--crash-reporter-id e98ffc5f-fa12-4a99-b5c3-44bae2bcdf58|
|Screen Reader|no|
|VM|100%|
</details><details><summary>Extensions (67)</summary>

Extension|Author (truncated)|Version
---|---|---
markdown-wysiwyg|ada|0.7.10
Bookmarks|ale|13.5.0
project-manager|ale|12.8.0
cpp-helper|ami|0.3.4
gitignore|cod|0.9.0
doxdocgen|csc|1.4.0
arm|dan|1.7.4
xslt-xpath|del|1.5.15
groovy-guru|Don|0.6.0
jenkins-extension-pack|Don|0.1.1
xml|Dot|2.5.1
gitlens|eam|15.6.2
vscode-html-css|ecm|2.0.10
cpp-reference-and-documentation|Fed|0.0.5
githd|hui|2.5.3
jenkinsfile-support|ivo|1.1.0
jenkins-pipeline-linter-connector|jan|1.2.0
plantuml|jeb|2.18.1
vscode-ext-import-export|jos|0.0.9
git-lfs-file-locking|kin|0.0.3
jenkins-doc|Maa|1.7.0
git-graph|mhu|1.30.0
csharp|ms-|2.50.27
vscode-dotnet-runtime|ms-|2.2.0
debugpy|ms-|2024.12.0
isort|ms-|2023.10.1
python|ms-|2024.16.1
vscode-pylance|ms-|2024.10.1
jupyter|ms-|2024.9.1
jupyter-keymap|ms-|1.1.2
vscode-jupyter-cell-tags|ms-|0.1.9
vscode-jupyter-slideshow|ms-|0.1.6
remote-containers|ms-|0.388.0
remote-ssh|ms-|0.115.0
remote-ssh-edit|ms-|0.87.0
remote-wsl|ms-|0.88.4
cmake-tools|ms-|1.19.52
cpptools|ms-|1.22.9
cpptools-extension-pack|ms-|1.3.0
hexeditor|ms-|1.10.0
makefile-tools|ms-|0.11.13
powershell|ms-|2024.2.2
remote-explorer|ms-|0.4.3
vs-keybindings|ms-|0.2.1
vsliveshare|ms-|1.0.5941
idl|myt|0.3.1
stash-tabs|paz|0.0.9
java|red|1.35.1
vscode-yaml|red|1.15.0
vscode-xml-complete|rog|0.3.0
annotator|ryu|1.0.0
online-help|sal|0.2.8
code-spell-checker|str|3.0.1
cmake|twx|0.0.17
vscode-counter|uct|3.6.1
intellicode-api-usage-examples|Vis|0.2.8
vscodeintellicode|Vis|1.3.1
vscode-gradle|vsc|3.16.4
vscode-java-debug|vsc|0.58.0
vscode-java-dependency|vsc|0.24.0
vscode-java-pack|vsc|0.29.0
vscode-java-test|vsc|0.42.0
vscode-maven|vsc|0.44.0
gitblame|wad|11.1.1
crs-al-language-extension|wal|1.5.33
markdown-all-in-one|yzh|3.6.2
vscode-open-in-github|ziy|1.3.6

(1 theme extensions excluded)

</details><details>
<summary>A/B Experiments</summary>

```
vsliv368:30146709
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492cf:30256860
vscod805cf:30301675
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:31024239
c4g48928:30535728
azure-dev_surveyone:30548225
962ge761:30959799
pythongtdpath:30769146
pythonnoceb:30805159
asynctok:30898717
pythonmypyd1:30879173
h48ei257:31000450
pythontbext0:30879054
accentitlementsc:30995553
cppperfnew:31000557
dsvsc020:30976470
pythonait:31006305
dsvsc021:30996838
01bff139:31013167
dvdeprecation:31068756
dwnewjupyter:31046869
newcmakeconfigv2:31071590
impr_priority:31102340
nativerepl2:31139839
refactort:31108082
pythonrstrctxt:31112756
wkspc-onlycs-t:31132770
nativeloc2:31134642
wkspc-ranged-t:31151552
cf971741:31144450
defaultse:31146405
iacca1:31156133
notype1cf:31157160
controlgs:31153265
5fd0e150:31155592
dwcopilotcf:31162479
icondisabled:31158250

```

</details>

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