SASS源地图指向错误的SASS文件

我有4个SASS文件main.sass,_fonts.sass,_variables.sass,_home.sass.

main.sass

@import 'fonts'
@import 'variables'
@import 'home'

_fonts.sass

@font-face
    font-family: "FontAwesome"
    font-weight: normal
    font-style: normal
    src: url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.eot?v=4.3.0")
    src: url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.eot?#iefix&v=4.3.0") format("embedded-opentype"), url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0") format("woff2"), url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff?v=4.3.0") format("woff"), url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.ttf?v=4.3.0") format("truetype"), url("https://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.svg?v=4.3.0#fontawesomeregular") format("svg")

_variables.sass

$yellow: #fce001

_home.sass

.container
    color: $yellow
    text-align: right

.another-container
    color: $yellow
    text-align: center

    &:after
        content: '\f0b0'
        font-family: FontAwesome
        font-style: normal
        font-weight: normal
        text-decoration: inherit
        position: absolute
        right: 20px
        display: inline-block
        font-size: 1.1em

这是我的示例HTML

    
    
    
    
    


    

        container
    
    

        another-container
    

我正在使用此命令编译我的SASS文件: sass --watch main.sass:style.css

当我检查我的谷歌浏览器检查元素container或another-container,它指向_variables.sassNOT _home.sass._variables.sass只包含变量.我希望它指向_home.sass.

@update我设法找出导致错误的原因,在_home.sass中content: '\f0b0',如果我删除它,源地图指向正确的行,为什么这会导致错误？