-webkit for flex is not prefixed

[italodr]

I'm using gulp-autoprefixer with this setting:

browsers : [
        'ie >= 10',
        'ie_mob >= 10',
        'ff >= 30',
        'chrome >= 21',
        'safari >= 6',
        'opera >= 23',
        'ios >= 7',
        'android >= 4.4',
        'bb >= 10'
    ]

I am using flex-wrap: wrap; and it generates the following

.row {
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

I've test this on iPad 8.4.1 and of course, it is broken as it expects to have -webkit-flex-wrap: wrap;.
Don't know what to do from here. I just tried to change browser versions in options but with the same result. Thanks in advance!

[italodr]

Just realize that this is affecting to all flexbox package

[ai]

Move your browsers to browserslist and please write comment in this issue webpack-contrib/css-loader#281