100% CPU utilization

[A]

Happens every time I run LO though I only noticed it after the last LO update.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: libreoffice-core 1:5.1.6~rc2-0ubuntu1~xenial7
ProcVersionSignature: Ubuntu 4.15.0-51.55~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-51-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Mon Jun 17 12:02:30 2019
InstallationDate: Installed on 2018-09-20 (269 days ago)
InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228)
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)

[Marcus Tomlinson (marcustomlinson)]

Could you try till back the update and see if the issue resolved:

sudo apt install libreoffice=1:5.1.6~rc2-0ubuntu1~xenial6