Variables not expanding when the terminal autoruns on startup (Win10 → WSL)

[747]

Issue Type: Bug

1. set up your workspace JSON as follows:

{
	"folders": [
		{
			"path": "."
		}
	],
	"settings": {
		"terminal.integrated.env.linux": {
			"PATH": "${workspaceFolder}:${env:PATH}"
		}
	}
}

2. close VSCode while in the workspace leaving the integrated terminal open (so that it restarts automatically at the next time)

3. launch VSCode again

4. the terminal pops up and says:

コマンド 'lesspipe' は以下の場所で利用できます
 * /bin/lesspipe
 * /usr/bin/lesspipe
'/bin:/usr/bin'がPATH環境変数に含まれていないためコマンドを特定できませんでした。
lesspipe: コマンドが見つかりません
コマンド 'dircolors' は '/usr/bin/dircolors' で利用できます
'/usr/bin'がPATH環境変数に含まれていないためコマンドを特定できませんでした。
dircolors: コマンドが見つかりません

(it complains in Japanese about /bin:/usr/bin not included in $PATH)

$ echo $PATH
${workspaceFolder}:${env:PATH}

5. open a new terminal and it correctly sources PATH

$ echo $PATH
/mnt/my/Workspace/Folder:/home/me/.vscode-server/bin/blahblah...

VS Code version: Code 1.43.0 (78a4c91, 2020-03-09T19:47:57.235Z)
OS version: Windows_NT x64 10.0.18363
Remote OS version: Linux x64 4.4.0-18362-Microsoft

System Info

Item	Value
CPUs	AMD Ryzen 7 1700 Eight-Core Processor (16 x 2994)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled viz_display_compositor: enabled_on viz_hit_test_surface_layer: disabled_off_ok webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.95GB (21.90GB free)
Process Argv
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu-18.04
OS	Linux x64 4.4.0-18362-Microsoft
CPUs	AMD Ryzen 7 1700 Eight-Core Processor (16 x 3000)
Memory (System)	31.95GB (21.91GB free)
VM	0%

Extensions (40)

Extension	Author (truncated)	Version
better-comments	aar	2.0.5
vsc-material-theme	Equ	32.5.0
vsc-material-theme-icons	equ	1.1.4
ace	eva	0.0.1
auto-close-tag	for	0.5.6
textile	idl	0.1.5
sdlang	Lau	0.1.2
procfile-support	log	0.0.1
vscode-language-pack-ja	MS-	1.43.6
remote-wsl	ms-	0.42.3
material-icon-theme	PKi	4.0.1
ayu	tea	0.18.0
vscode-ruby	win	0.27.0
material-theme	zhu	3.2.3
insert-unicode	bru	0.7.1
better-toml	bun	0.3.2
githistory	don	0.6.3
EditorConfig	Edi	0.14.4
crystal-lang	fau	0.3.14
auto-close-tag	for	0.5.6
auto-complete-tag	for	0.1.0
auto-rename-tag	for	0.1.1
code-runner	for	0.9.17
sass-lint	gle	1.0.6
todo-tree	Gru	0.0.169
align-by-regex	jan	1.0.4
asciidoctor-vscode	joa	2.7.13
nim	kos	0.6.4
formate	Mik	1.1.4
vscode-language-pack-ja	MS-	1.43.6
python	ms-	2020.2.64397
cpptools	ms-	0.26.3
trailingwhitespacehighlighter	paj	0.0.2
ruby	reb	0.27.0
rust	rus	0.7.0
crates	ser	0.4.9
vscode-table-formatter	shu	1.2.1
sass-indented	syl	1.7.5
vscode-ruby	win	0.27.0
better-align	wwm	1.1.6

(4 theme extensions excluded)

[Tyriar]

Same root cause as #81231 I believe.