[Insiders] .tsx files Syntax Highlighter broken

[visualcookie]

Issue Type: Bug

1. Open VSCode Insiders
2. Open any .tsx file
3. Switch the color theme
4. See the syntax highlighting work but shortly after it gets white again

Video of this issue: https://streamable.com/pefag

Short description: This issue occurs, AFTER language features have been initialized.

VS Code version: Code - Insiders 1.42.0-insider (6861571, 2020-01-22T05:26:38.760Z)
OS version: Darwin x64 19.2.0

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 x 2800)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled metal: disabled_off 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)	2, 2, 2
Memory (System)	16.00GB (2.14GB free)
Process Argv	-psn_0_2753184
Screen Reader	no
VM	0%

Extensions (39)

Extension	Author (truncated)	Version
better-comments	aar	2.0.5
project-manager	ale	10.9.1
jest-snippets	and	1.7.0
i18n-ally	ant	1.11.4
vscode-intelephense-client	bme	1.3.7
npm-intellisense	chr	1.3.0
path-intellisense	chr	1.4.2
bracket-pair-colorizer-2	Coe	0.0.29
vscode-eslint	dba	2.0.15
xml	Dot	2.5.0
es7-react-js-snippets	dsz	2.5.0
gitlens	eam	10.2.0
EditorConfig	Edi	0.14.4
vscode-firefox-debug	fir	2.6.1
flow-for-vscode	flo	1.5.0
vscode-yarn	gam	1.7.0
helium-icon-theme	hel	1.0.0
docthis	joe	0.7.1
Angular2	joh	8.3.0
vscode-styled-components	jpo	0.0.28
chat	kar	0.31.0
dotenv	mik	1.0.1
vscode-docker	ms-	0.9.0
sublime-keybindings	ms-	4.0.6
vsliveshare	ms-	1.0.1510
vsliveshare-audio	ms-	0.1.80
vsliveshare-pack	ms-	0.3.4
vscode-extension-auto-import	Nuc	1.4.3
vscode-jest	Ort	3.1.1
vscode-versionlens	pfl	0.24.0
material-icon-theme	PKi	3.9.2
vscode-graphql	Pri	0.2.2
vscode-xml	red	0.10.1
vscode-javascript-booster	sbu	0.11.0
vscode-fileutils	sle	3.0.1
errorlens	use	2.9.0
vscode-fintory	vis	1.0.1
vscodeintellicode	Vis	1.2.4
vscode-import-cost	wix	2.12.0

(3 theme extensions excluded)

[IllusionMH]

/duplicate of #88911

Solution: disable semantic highlights with "editor.semanticHighlighting.enabled": false in settings.json

[vscodebot]

Thanks for creating this issue! We figured it's covering the same as another one we already have. Thus, we closed this one as a duplicate. You can search for existing issues here. See also our issue reporting guidelines.

Happy Coding!