User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.3
Steps to reproduce:
Start chatzilla by clicking on the signet in the foot bar of seamonkey 2.49.3-french
startup with incomplete window. no links to irc servers, incomplete task bar.
Regular start with list of IRC servers and complete task bar