Why does autoprefixer do partial android support?

Question

JavaScript

Good afternoon! Faced a problem. Why does autoprefixer partially support flexbox under android? And in the first case it does not work with browsers, and in the second. Seems to ignore flex-wrap. This is probably the main problem.
Link: elinadesign.ru/synergy Output
css:

-ms-flex-wrap: wrap;
  flex-wrap: wrap;

gulp.task('autopr', () =>
    gulp.src('css/main.css')
        .pipe(autoprefixer({
        	browsers: ['last 2 version', 'ie 9', 'ios 6', 'android 4'],
            // browsers: ['last 2 version', 'last 3 ie versions', 'last 3 ios versions', 'last 5 android versions'],
            cascade: false
        }))
        .pipe(gulp.dest('dist'))
);

Answer 1

Here is my working config:
iOS 6, IE9 IMHO are hopelessly outdated and do not need support.
Output code:

.test {
   -webkit-flex-wrap: wrap;
       -ms-flex-wrap: wrap;
           flex-wrap: wrap;
}