I am having the same issue. The page throws this –
input.js?ver=1.1.1:52 Uncaught TypeError: this.$values.unbind(...).sortable is not a function(…)
for –
// sortable
if( this.o.max != 1 )
{
this.$values.unbind('sortable').sortable({
items : '> .layout',
handle : '> .acf-fc-layout-handle',