Ubuntu Mate 17.10
I couldn't open Enpass 6.0 from menu. I wrote this launcher script to make it work.
#!/bin/bash
export GDK_BACKEND=x11
export QT4_IM_MODULE=xim
export QT_ACCESSIBILITY=1
export QT_IM_MODULE=ibus
export QT_QPA_PLATFORMTHEME=gtk2
/opt/enpass/Enpass
I have a crash log if you want me to send it to you.