every time we try to login otrs trough agent interface we receive the following error. This issue occurs since my migration to 3.x. Do you have any idea regarding it ? 
 
Core.App.UnblockEvents is not a function
 
(?)()@http://cac.easyap.com/otrs/index.pl:194
Ready((function (j, s) {return new b.fn.init(j, s);}))@http://cac.easyap.com/otrs-web/js/js-cache/CommonJS_5729f51da7b5401141ee1f99bb942f8a.js:582
trigger()@http://cac.easyap.com/otrs-web/js/js-cache/CommonJS_5729f51da7b5401141ee1f99bb942f8a.js:37
trigger([object Event])@http://cac.easyap.com/otrs-web/js/js-cache/CommonJS_5729f51da7b5401141ee1f99bb942f8a.js:37