I am using Windows 10 v1507 build 10586(64 Bit) in my laptop. I have difficulty to download latest browser version updates from official website, so I downloaded 64 bit installer from 3rd party software downloading website Filehippo.com . 1st I installed version 22.214.171.124, this version opens but not displaying, now I updated to version 126.96.36.199, now in this version automatically swithed to full screen, minimize and maximize works but bottom taskbar not showing during browsing. I know that there is no additional display setting available in IceDragon Browser, and currently no display settings are changed by me. Only I disabled animation effects of Windows.