I have also run into this. I ran dmesg and get this:  traps: PacketTracer7[24937] trap divide error ip:7fc5b3699ef4 sp:7fff056360b0 error:0 in libQt5XcbQpa.so.5[7fc5b35dd000+111000]I tried reinstalling the qt5 libraries, no luck. I just wiped my Ubu...