Crash opening the menu in firefox

[squidink7]

In any of the latest builds, opening the three dot menu in the bottom (or top, depending on configuration) right corner of Firefox causes visual distortion on the address bar and renders the display unable to update, though interacting with certain areas of the display still trigger system sounds which implies the phone is still responsive. The only way I've found to recover from this state is to hard-reboot the device.