stylus formatting keep adding () to function every time

[littlee]

• I have searched through existing issues
• I have read through docs
• I have read FAQ

Info

• Platform:

macOS Catalina 10.15.1 (19B88)

• Vetur version:

0.22.6

• VS Code version:

Version: 1.40.1
Commit: 8795a9889db74563ddd43eb0a897a2384129a619
Date: 2019-11-13T16:47:44.719Z
Electron: 6.1.2
Chrome: 76.0.3809.146
Node.js: 12.4.0
V8: 7.6.303.31-electron.0
OS: Darwin x64 19.0.0

Problem

t(x) {
  x * 320 / 750px;
}

will turn to

t(x) {
  ((((x * 320 / 750px))));
}

Reproducible Case

[octref]

Upstream issue: ThisIsManta/stylus-supremacy#55