Integrated terminal sometimes loses most characters after hibernation

[the-ress]

Issue Type: Bug

Steps to Reproduce:

1. Open integrated terminal
2. Hibernate Windows
3. Resume Windows

Sometimes many the characters go missing. This persist when resizing or switching the terminals, also when scrolling or typing. New terminals are rendered correctly.

I'm using the canvas mode.

Previous vscode versions used to crash after typing in this state, but I can't reproduce that now.

VS Code version: Code 1.32.1 (05f146c, 2019-03-08T00:51:49.278Z)
OS version: Windows_NT x64 10.0.17134

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz (4 x 2496)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled surface_synchronization: enabled_on video_decode: enabled webgl: enabled webgl2: enabled
Memory (System)	7.87GB (0.42GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (63)

Extension	Author (truncated)	Version
livs	abh	1.0.6
html-snippets	abu	0.2.1
vscode-base64	ada	0.1.0
vscode-caniuse	aka	0.5.3
ts-loader-problem-matcher	alq	0.3.0
random-string-password-generator	bib	1.0.2
unique-lines	bib	1.0.0
cobol	bit	4.5.0
simple-react-snippets	bur	1.2.2
npm-intellisense	chr	1.3.0
path-intellisense	chr	1.4.2
gitignore	cod	0.6.0
indent4to2	Com	0.1.2
vscode-svgviewer	css	2.0.0
vscode-gist	dba	1.0.0
xml	Dot	2.4.0
vscode-generate-getter-setter	DSK	0.5.0
vscode-babel-coloring	dza	0.0.4
permute-lines	ear	0.0.10
EditorConfig	Edi	0.13.0
tslint	eg2	1.0.43
vscode-npm-script	eg2	0.3.5
php-debug	fel	1.13.0
php-pack	fel	1.0.2
vscode-solution-explorer	fer	0.3.1
vscode-auto-open-markdown-preview	hnw	0.0.4
beautify	Hoo	1.4.9
Ionide-FAKE	Ion	1.2.3
Ionide-Paket	Ion	1.12.0
reg	ion	0.0.2
debugger-for-phantomjs	ira	0.1.1
csharpextensions	jch	1.3.0
jenkins-declarative-support	jmM	0.1.0
latte	Kas	0.1.1
refactorix	kri	0.3.6
tgit-cmds	mbi	1.2.1
sort-typescript-imports	mic	1.4.1
ecdc	mit	1.0.5
mssql	ms-	1.4.0
cpptools	ms-	0.21.0
csharp	ms-	1.17.1
mono-debug	ms-	0.15.8
node-debug2	ms-	1.32.1
PowerShell	ms-	1.11.0
team	ms-	1.149.2
debugger-for-chrome	msj	4.11.3
vscode-docker	Pet	0.5.2
quicktype	qui	12.0.46
vscode-sort-json	ric	1.13.0
vscode-icons	rob	8.2.0
annotator	ryu	0.11.0
partial-diff	ryu	1.4.0
jenkinsfile-support	sec	0.1.0
code-settings-sync	Sha	3.2.7
trailing-spaces	sha	0.2.11
vscode-hexdump	sle	1.7.2
rewrap	stk	1.9.1
es-quotes	vil	0.2.6
vscode-react-native	vsm	0.8.0
change-case	wma	1.0.0
JavaScriptSnippets	xab	1.7.2
editorconfig-vscode-snippet	zgu	0.2.0
vscode-open-in-github	ziy	1.3.6

In this GIF I'm typing cmd, exit, and asdfghjkl;1234567890.

[Tyriar]

/duplicate #69665