I have the same problem on Linux Mint MATE 18.3 Sylvia (Ubuntu 16.04) with LibreOffice 1:6.1.3~rc2-0ubuntu0.16.04.1 from PPA.
$ LC_ALL=C apt-cache policy libreoffice-impress libreoffice-impress: Installed: 1:6.1.3~rc2-0ubuntu0.16.04.1 Candidate: 1:6.1.3~rc2-0ubuntu0.16.04.1 Version table: *** 1:6.1.3~rc2-0ubuntu0.16.04.1 500 500 http://ppa.launchpad.net/libreoffice/ppa/ubuntu xenial/main amd64 Packages 100 /var/lib/dpkg/status It happens also when I downgrade to 1:5.1.6~rc2-0ubuntu1~xenial4 from xenial-upgrades. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/1469163 Title: Missing charachters on slide text/title Status in libreoffice package in Ubuntu: Confirmed Bug description: Opening an existing document (from a previous version of libreoffice, two years old), clicking on the text to edit, after a few milliseconds some of the letters disappear. The disappeared letters do not have any special formatting. In presentation mode (F5) the letters appear correctly. See the attached documents (the slides and the snapshot). Here on (K)ubuntu 14.04 64bit ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: libreoffice-impress 1:4.2.8-0ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20 Uname: Linux 3.13.0-55-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 CurrentDesktop: KDE Date: Fri Jun 26 14:32:08 2015 InstallationDate: Installed on 2013-08-01 (694 days ago) InstallationMedia: Kubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214) SourcePackage: libreoffice UpgradeStatus: Upgraded to trusty on 2014-04-18 (434 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1469163/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp