Wrong merge of nested negative media queries (with the keyword NOT)

[Revisor]

Hello, I found a few past issues about this, but it still seems unresolved.

Past issue in Ruby Sass : sass/sass#1831 "Nested media queries using the "not" keyword should not be merged"
Past issue in Libsass: sass/libsass#2425 "Negation is ignored when nested media queries exist"
Past issue here, in Dart-Sass: #244 "Nested negated media query behavior is wrong"

Source:

@media screen and (hover: hover) {
    @media not all and (any-pointer: coarse) {
        @media not all and (any-pointer: none) {
            .all-conditions {
                display: inline;
            }
        }
    }
}

Expected outcome:

@media screen and (hover: hover) {
    @media not all and (any-pointer: coarse) {
        @media not all and (any-pointer: none) {
            .all-conditions {
                display: inline;
            }
        }
    }
}

Expected outcome in Media Queries Level 4 syntax

@media screen and (hover: hover) and (not(any-pointer: coarse)) and (not(any-pointer: none)) {
    .all-conditions {
        display: inline;
    }
}

But this syntax is only theoretical and doesn't work yet in Chrome 70 nor FF 63.

Received outcome in DartSass 1.6.2:

(Empty result)

Received outcome in LibSass 3.5.2:

@media screen and (hover: hover) and (any-pointer: coarse) and (any-pointer: none) {
  .all-conditions {
    display: inline;
  }
}

Wrong rule, the negations have disappeared.

Thank you for taking a look at this.