Some buttons are not active: Edit (copy, past, etc), Save page as, Sync, Restart, Bookmarks, History, Downloads, Options and submenu, Print->Page setup, Web Developer->All items except Get more tools, New Tab->Open file, Help->no submenu, )
You can not configure the location of the main button. I have FF57

Hi, I was hoping for more from API's Classic Theme Restorer. What I miss mostly is the classic search window were you could change the search engine more easily: All search engines were one under the other, with text. It helps to distinguish the different Wikipedia language versions. I hope you plan more like that.