sorry,i not mush know how to report this,i only can found is here. the bug is,if you are a new use,(never setting anything before),click the langguae button,selecet ime,this will nothing come out,it means you even cant disable the keyboard icon.
i use a temp way to fix it: /UniversalLanguageSelector/resources/js/ext.uls.inputsettings.js
202 prepareLanguages: function () {
203 var inputSettings = this,
204 SUGGESTED_LANGUAGES_NUMBER = 3,
205 selectedImeLanguage = $.ime.preferences.getLanguage() || "en", //if never define a language,like first time,it will make mistake
206 languagesForButtons, $languages, suggestedLanguages,
207 firstLanguage, lang, i, language, $button, $caret;