Lubuntu 20.04 and 20.10: Libreoffice: font of some dialog-windows is too small

[Rudolph]

in LibreOffice: Tools>Options…: the font of the dialog-window is too small;
same problem:
Help>About LibreOffice: the font of the dialog-window is too small;
it's because the VLC is set to qt5+cairo (this information can be found in: Help>About LibreOffice)

maybe this problem exists for more dialog-windows in LibreOffice;
this problem does not occur in the open/save-dialog-window (I think, it is because the open/save-dialog-window uses the LXQt File Dialog)

now run those 2 lines on the terminal:
sudo apt install libreoffice-kf5
sudo apt remove libreoffice-qt5

now the VLC is set to gtk3 (this information can be found in: Help>About LibreOffice)
now the font of the dialog-windows is not too small any more;
so, the problem has got something to do with the package libreoffice-qt5

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: libreoffice (not installed)
ProcVersionSignature: Ubuntu 5.8.0-29.31-generic 5.8.14
Uname: Linux 5.8.0-29-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.2
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Sun Nov 29 15:22:07 2020
InstallationDate: Installed on 2020-11-19 (9 days ago)
InstallationMedia: Lubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

Long story short: Lubuntu wants to use the qt5 VCL but we continue to discover more and more areas where the functionality is incomplete still relative to the other options.

[Heather Ellsworth (hellsworth)]

Thank you so much for your bug report and making Ubuntu better!

There are some issues with Qt integration library already. However, due to resources vs priority, this is pretty low especially since there's a workaround.

[Marco Aurelio (marc0aurelio)]

Hello, I have the same issue. To be honest work with such small fonts is tiring.

[Adolfo Jayme Barrientos (fitojb)]

Hi @wxl, is there any upstream bug report we can look at?