format --> character menu has font preview ovelapping

To reproduce open a new presentation in libreoffice impress on Lubuntu 20.04. Then in the menu open Format --> Character then for liberation sans the default font has the letters all overlapping in the font preview.

I expected the letters in the font preview to not be overlapping. Instead the letters all appear overlapping in the preview but do not appear that way in the main window of libreoffice impress.

libreoffice-impress:
 Installed: 1:6.4.2-0ubuntu3
  Candidate: 1:6.4.2-0ubuntu3
Description: Ubuntu 20.04 LTS
Release: 20.04

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: libreoffice-impress 1:6.4.2-0ubuntu3
ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30
Uname: Linux 5.4.0-24-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Sat Apr 18 16:57:54 2020
InstallationDate: Installed on 2020-02-05 (73 days ago)
InstallationMedia: Lubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20191226)
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)