Disabling Adobe Source Code Pro font on Ubuntu/Pop using font manager and restarting writer largely fixes the issue for me.
I found this fix on reddit. The Source Code font from Adobe seems problematic. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to fontconfig in Ubuntu. https://bugs.launchpad.net/bugs/1969709 Title: libreoffice font selection unusably slow Status in fontconfig package in Ubuntu: Confirmed Status in libreoffice package in Ubuntu: Confirmed Bug description: Trying to scroll through the font list in the menu bar, I experience an unacceptable degree of lagging. Just popping up the dropdown list takes 7-10 seconds and the system takes the same amount of time to respond to perform individidual scrolling gestures. The CPU jumps to 100% and the whole system becomes unresponsive. I have tried deb, snap and even the packages offered on the site of the LibreOffice project. They all manifest the same behaviour. The only thing that works is disabling font previews. I have downgraded to 7.2 for now, which appears to be unaffected. I have contacted the LibreOffice team and they tell me that this should be solved by fontconfig 2.14. Unfortunately, Ubuntu 22.04 is shipping 2.13... ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: libreoffice-core 1:7.3.2-0ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-25.25-generic 5.15.30 Uname: Linux 5.15.0-25-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu82 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Thu Apr 21 05:01:24 2022 ExecutablePath: /usr/lib/libreoffice/program/soffice.bin InstallationDate: Installed on 2022-03-27 (24 days ago) InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20220326) SourcePackage: libreoffice UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fontconfig/+bug/1969709/+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
