Dropdown menu looks weird after login (after upgrade to Easysocial 2.0.2)

Hi, I use JA intranet and Easysocial. After I upgraded to Easysocial 2.0.2, In safari browser, when user login, the width of dropdown menu is very large, please see the attached picture. In IE, Firefox, Chrome， it looks good. Can you help me to fix this issue in Safari browser? I can add some custom css code in custom.css. Please use username: shiyouchen Password: easysocial to login with Safari Browser, you will see the issue. Thank you for your time and effort on helping me in advance.