`grid: false` does not disable adding of `-ms-grid` to `@supports`

The following input CSS:

@supports (display: grid) {
  .foo {
    display: grid;
  }
}

produces the following result with the grid: false option passed to autoprefixer:

@supports ((display: -ms-grid) or (display: grid)) {
  .foo {
    display: grid; } }

This is unexpected and leads to inconsistent prefixing. Setting grid: false should in my mind disable it everywhere, including @supports rules.

[ai]

Released in 6.7.2.

[ai]

Sure. Thanks for report. I will try to fix it today.