On Windows 10 and Firefox 58.0.2, when I click the menu button in the upper right (the three hamburger bars) or any other menu button (i.e. history), a ghost of the drop menu appears and Firefox hangs for at least a few seconds. Often times, it totally hangs and needs to be closed. I can browse and scroll and video stream works. I have tried the "it hangs" fixes and none work. Specifically I have tried the accessibility permission option, the disable hardware acceleration option, and trying a new alternative profile (full on reset). I have also tried uninstalling the 64bit version and installing the 32bit version. None of this has worked. The menu bar does work. Also when any popup from the menu button area (i.e. giving website location access) it is ghosted or black and locks Firefox.