Unexpected space-before-colon warning on @at-root :root

[Grawl]

➜ sass-lint -V
1.10.2

.sass-lint.yml

 

files:
  include: 'app/assets/styles/**/*.{sass,scss}'
rules:
  attribute-quotes:
    - 1
    -
      include: true
  bem-depth:
    - 0
  border-zero:
    - 1
    -
      convention: none
  brace-style:
    - 1
    -
      style: stroustrup
      allow-single-line: false
  class-name-format:
    - 0
  clean-import-paths:
    - 1
    -
      leading-underscore: false
      filename-extension: false
  declarations-before-nesting:
    - 1
  empty-args:
    - 1
    -
      include: false
  empty-line-between-blocks:
    - 1
    -
      include: false
  extends-before-declarations:
    - 1
  extends-before-mixins:
    - 1
  final-newline:
    - 1
    -
      include: true
  force-attribute-nesting:
    - 0
  force-element-nesting:
    - 0
  force-pseudo-nesting:
    - 0
  function-name-format:
    - 0
  hex-length:
    - 0
  hex-notation:
    - 0
  id-name-format:
    - 0
  indentation:
    - 0
  leading-zero:
    - 1
    -
      include: true
  max-file-line-count:
    - 1
    -
      length: 300
  max-line-length:
    - 0
  mixin-name-format:
    - 0
  mixins-before-declarations:
    - 1
  nesting-depth:
    - 0
  no-attribute-selectors:
    - 0
  no-color-hex:
    - 1
  no-color-keywords:
    - 0
  no-color-literals:
    - 0
  no-combinators:
    - 0
  no-css-comments:
    - 1
  no-debug:
    - 0
  no-disallowed-properties:
    - 0
  no-duplicate-properties:
    - 1
  no-empty-rulesets:
    - 0
  no-extends:
    - 0
  no-ids:
    - 1
  no-important:
    - 1
  no-invalid-hex:
    - 0
  no-mergeable-selectors:
    - 1
  no-misspelled-properties:
    - 2
    -
      extra-properties:
        - -webkit-overflow-scrolling
        - border-top-radius
        - border-bottom-radius
        - border-left-radius
        - border-right-radius
        - size
        - max-size
        - margin-x
        - margin-y
        - padding-x
        - padding-y
        - border-x
        - border-y
        - border-x-color
        - border-y-color
        - absolute
        - fixed
        - relative
  no-qualifying-elements:
    - 1
    -
      allow-element-with-attribute: true
  no-trailing-whitespace:
    - 1
  no-trailing-zero:
    - 1
  no-transition-all:
    - 2
  no-universal-selectors:
    - 0
  no-url-domains:
    - 2
  no-url-protocols:
    - 2
  no-vendor-prefixes:
    - 1
    -
      additional-identifiers:
        - khtml
        - o
      ignore-non-standard: true
  no-warn:
    - 0
  one-declaration-per-line:
    - 1
  placeholder-in-extend:
    - 0
  placeholder-name-format:
    - 0
  property-sort-order:
    - 0
  property-units:
    - 0
  pseudo-element:
    - 2
  quotes:
    - 1
    -
      style: single
  shorthand-values:
    - 2
  single-line-per-selector:
    - 0
  space-after-bang:
    - 1
    -
      include: false
  space-after-colon:
    - 1
    -
      include: true
  space-after-comma:
    - 1
    -
      include: true
  space-around-operator:
    - 1
    -
      include: true
  space-before-bang:
    - 1
    -
      include: true
  space-before-brace:
    - 1
    -
      include: true
  space-before-colon:
    - 1
    -
      include: false
  space-between-parens:
    - 1
    -
      include: false
  trailing-semicolon:
    - 1
    -
      include: true
  url-quotes:
    - 1
  variable-for-property:
    - 0
  variable-name-format:
    - 0
  zero-unit:
    - 2
    -
      include: false

 

 

@at-root :root & {
	border-left: none;
}

I expect to see :root is ignored by space-before-colon/space-after-colon rules.

I am using Sass Lint plugin for Jetbrains IDE.

Tried to use CLI and got the same:

app/assets/styles/modules/vendor-foundation.scss
   33:14  warning  No space allowed before `:`   space-before-colon
   47:12  warning  No space allowed before `:`   space-before-colon

@at-root html does not throws this error.

:root without @at-root prefix does not throws this error.