Autoprefixer 8.1 brings overscroll-behavior and better Grid support.

Overscroll Behavior

@Malvoz suggested the great idea to polyfill overscroll-behavior for IE 11 and Edge by -ms-scroll-chaining.

.none {
    -ms-scroll-chaining: none;
        overscroll-behavior: none;
}
.contain {
    -ms-scroll-chaining: none;
        overscroll-behavior: contain;
}
.auto {
    -ms-scroll-chaining: chained;
        overscroll-behavior: auto;
}

Note, that overscroll-behavior-x and overscroll-behavior-y are not supported since -ms- property doesn’t have this freedom.

Better Grid Layout

@evgeny-petukhov continues his amazing work and now Autoprefixer polyfills Grid Layout for IE in more cases.

He added grid-template shortcut support and improve support of grid-column-end and grid-row-end.

Grid properties were fixed in @supports. We recommend:

• To select modern Grid browsers and IE 11: @supports (display: grid).
• To select only Grid browsers without IE 11: @supports (grid-gap: 0).

Note, that you need grid: true option to Autoprefixer to add -ms- prefixes for Grid Layout.