vscode: prefer beautifier config not working

I can’t seem to get PHP-CS-Fixer or CSScomb to work with unibeautify in vscode windows 10. When I try to format a php or css file nothing happens.

My config file is:

{
	"PHP": {
		"beautifiers": [
			"PHP-CS-Fixer"
		],
		"PHP-CS-Fixer": {
			"prefer_beautifier_config": true
		}
	},
	"CSS": {
		"beautifiers": [
			"CSScomb"
		],
		"CSScomb": {
			"prefer_beautifier_config": true
		},
		"indent_style": "tab",
		"indent_size": "1",
		"end_with_newline": true
	},
	"JavaScript": {
		"beautifiers": [
			"JS-Beautify",
			"ESLint"
		],
		"indent_style": "tab",
		"indent_size": "1",
		"end_with_newline": true,
		"max_preserve_newlines": "2",
		"preserve_newlines": true,
		"jslint_happy": true,
		"quotes": "single",
		"multiline_ternary": "never",
		"brace_style": "collapse-preserve-inline",
		"object_curly_spacing": false
	}
}

I did try with the formatters available in PATH. Also tried to provide the absolute path in the path property.