Vscode's terminal can't display non-english letters correctly.

[origin-coding]

Issue Type: Bug

1. Open the terminal and type command "echo 你好世界"
2. I use powershell as vscode's default shell, however, this bug don't appear when I directly use powershell on desktop.
3. Also tried "echo こんにちは、世界", seems that this could happen to all non-english letters.

VS Code version: Code 1.60.0 (e7d7e9a, 2021-09-01T10:41:52.311Z)
OS version: Windows_NT x64 6.1.7601
Restricted Mode: No

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz (4 x 2400)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	3.44GB (0.69GB free)
Process Argv	--crash-reporter-id ca1c4cbb-ea30-408c-bd71-f52062f66fa8
Screen Reader	no
VM	0%

Extensions (26)

Extension	Author (truncated)	Version
path-intellisense	chr	2.4.0
vscode-eslint	dba	2.1.23
vscode-pandoc	Dou	0.0.8
prettier-vscode	esb	8.1.0
dictionary	Exi	0.0.2
code-runner	for	0.11.5
todo-tree	Gru	0.0.214
vscode-drawio	hed	1.6.2
latex-workshop	Jam	8.20.2
vscode-leetcode	Lee	0.18.0
marp-vscode	mar	1.4.0
vscode-filesize	mkx	3.1.0
vscode-language-pack-zh-hans	MS-	1.60.3
python	ms-	2021.9.1191016588
vscode-pylance	ms-	2021.9.1
jupyter	ms-	2021.8.2041215044
jupyter-keymap	ms-	1.0.0
cpptools	ms-	1.6.0
material-icon-theme	PKi	4.10.0
LiveServer	rit	5.6.1
rust	rus	0.7.8
markdown-preview-enhanced	shd	0.6.0
code-spell-checker	str	2.0.4
open-in-browser	tec	2.0.0
masm-tasm	xsr	0.9.0
markdown-all-in-one	yzh	3.4.0

(1 theme extensions excluded)

A/B Experiments

vsliv368cf:30146710
vsreu685:30147344
python383:30185418
pythonvspyt602:30300191
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstes516:30244333
pythonvspyt639:30300192
pythontb:30283811
pythonvspyt551:30345470
pythonptprofiler:30281270
vsdfh931:30280409
vshan820:30294714
vstes263:30335439
pythondataviewer:30285071
pythonvsuse255:30340121
vscod805cf:30301675
pythonvspyt200:30340761
vscextlangct:30333562
binariesv615:30325510
pythonvssor306:30344512
bridge0708:30335490
pygetstartedc2:30360494
bridge0723:30353136
pythonf5test824:30361777
pythonvspyt187:30362782
pydsgst2:30361792
vscus224:30358039
vssid140:30363603

pictures below:

[infinnie]

I cannot reproduce it.

VS Code 1.60.0 on Windows 7:

[meganrogge]

looks like it is displaying them, but when echoed each character is duplicated

[meganrogge]

can you try to repro this in Insider's and let me know if you can?

[origin-coding]

can you try to repro this in Insider's and let me know if you can?

still can reproduce this in insider's

[Tyriar]

This issue seems to originate from an upstream component and is not something VSCode can fix by making a change to our code. As such, I will go ahead and close it. Please try to reproduce in Windows Terminal and report to microsoft/terminal with repro steps.

If you cannot reproduce in Windows Terminal, chances are it's fixed in a later version of Windows. You can read more about how we consume conpty here. Thanks for understanding.

/label upstream terminal-conpty windows