Seems as if it may be related to video card/driver
If the OpenGL-related suggestions in the linked answer prove ineffective, do try upgrading the system video driver. Also note that Ubuntu 14.04 is old and certain system components may be incompatible with LO v5.0 (from memory v5.1 is incompatible with this version of Ubuntu). It is simply too old.
… or use an older LO release, such as the one that is compatible with that LTS. There were no details provided in the Q about how the LO package was installed or from what source.
Can be possibly the OpenGL bug; see reply to Q64314. There is also a current GTK3 issue, but I cannot find the link for that.
Generally true, but with PPA variants instability can also be due to packaging / changes by distribution developers. It is more difficult to determine problems for PPA variants for this reason. List of “gtk3” changes here and “gtk” bugs here.