vue directive code snippet does not work

[lincenying]

• I have searched through existing issues
• I have read through docs
• I have read FAQ
• I have tried restarting VS Code or running Vetur: Restart VLS

Info

• Platform: macOS
• Vetur version: 0.31.3
• VS Code version: 1.52.0

Problem

snippets/vue-html.json add

"v-for": {
        "prefix": "vFor",
        "body": [
            "v-for=\"(${1:item}, ${2:index}) in ${3:items}\" :key=\"${4:index}\""
        ],
        "description": "Expects: Array | Object | number | string"
    }

The blank space + v: No custom code snippet found

tab + v: Working fine

enter + v: Working fine

Outside the label: Working fine