Linux Flatpak Fonts look very bad

[Utini]

I am on Fedora Kinoite and use LibreOffice from flathub in its latest version. In writer and calc the fonts looks really bad. I have microsoft fonts installed and also microsoft office (via RDP) and OnlyOffice (flatpak) installed as well. The bad font quality only exists in LibreOffice. I also tried running it in X11 but that didn’t help.

Attached is a screenshot (left onlyoffice, right libreoffice).

I already tried playing around with all the settings (rendering, hinting, hardware acceleration,…).

Is there any fix to this?

[RobertG]

Never seen such a behavior. Might be there is something incomplete with the installation.
Go to Help → About LibreOffice → Copy version information with the Button. Post it here.

[karolus]

Cannot confirm the issue with

Version: 25.8.1.1 (AARCH64) / LibreOffice Community
Build ID: 54047653041915e595ad4e45cccea684809c77b5
CPU threads: 4; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Flatpak
Calc: threaded

versus:

Version: 25.2.3.2 (AARCH64) / LibreOffice Community
Build ID: 520(Build:2)
CPU threads: 4; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Debian package version: 4:25.2.3-2+deb13u2
Calc: threaded

[Utini]

Version: 25.8.2.2 (X86_64) / LibreOffice Community
Build ID: d401f2107ccab8f924a8e2df40f573aab7605b6f
CPU threads: 24; OS: Linux 6.16; UI render: default; VCL: gtk3
Locale: de-AT (en_US.UTF-8); UI: en-US
Flatpak
Calc: threaded

@karolus @RobertG