I'd use emmet setting below:
"emmet.showSuggestionsAsSnippets": true,
"editor.snippetSuggestions": "top"
"emmet.includeLanguages": {
// "vue-sass": "sass" // it's no use
"vue-html": "html"
},
emmet works fine with other blocks, but not working on sass block. (gif below)
I'd test with stylus and scss, works fine.
But sass was broken.
(btw, the suggestion was auto close when I enter properties.)

Vetur only has syntax highlighting and formatting support for SASS.
@TheRealSyler Maybe you would be interested?
ill take a look at it, but im pretty sure that emmet is handled by vscode.
@octref @yoyoys this issue can be closed.
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@octref @yoyoys this issue can be closed.