Social Icons gone in Header and Footer

I have a lot of sites with Enfold.

Since the latest updates I have issues with the social Icons.

https://www.kundendialog.ch/ Here as example, no header icons. Header icons are set in Theme Options -> Header -> additional Elements.
Latest Enfold 4.6.3.1 installed.

http://new.officelab.ch/ here, I have social icons in the header, but older version of Enfold: 4.5.7
But also there, some strange icons error. I place in a post: [av_font_icon icon='ue832' font='entypo-fontello' style='' caption='' link='' linktarget='' size='40px' position='left' animation='deactivated' color='' av_uid='' custom_class='' admin_preview_bg=''][/av_font_icon] icon is shown.

I put the same thing in the Footer widget : not shown. I added it via PHP to the footer like do_shortcode(“[av_font_icon icon='ue832' font='entypo-fontello' style='' caption='' link='' linktarget='' size='40px' position='left' animation='deactivated' color='' av_uid='' custom_class='' admin_preview_bg=''][/av_font_icon]“); not shown too.

There is an HTML output, but the icon is missing, as in the new version in the header too (Html there, but Icon code missing).

Since last update, the social Icons in the header are gone.