Topic on Extension talk:MobileFrontend

I googled but couldn't find anything related to this issue, so seems just happening to me? I have below in LocalSettings.php to use MinervaNeue skin and MobileFrontend for mobile view. The icons shows up well on desktop browser but not in mobile view for some reason..

$wgDefaultSkin = "vector";

wfLoadSkin( 'MinervaNeue' );

$wgMFAutodetectMobileView = true;

wfLoadExtension( 'MobileFrontend' );