setTimeout( modal.trigger( 'change' ), 300 );
should be setTimeout( function(){ modal.trigger( 'change' ); }, 300 );
on line 712
Enfold Version: 4.7.1
WP Version: 5.3.2
Also AviaBuilder::VERSION
hasn’t been updated from 4.6.3 to 4.7.1 in template-builder.class.php so assets are being enqueued with same query string as the previous version, meaning some people could be getting served cached assets which could cause problems.