KGIII,Thanks to your very clear steps I've reproduced this on hirsute Lubuntu.
Further testing suggests that the crash will occur if at least one Libreoffice application is opened when Impress is opened AND then you immediately open Libreoffice Math and then go back and select the vivid theme. While I agree we have a bug here, it is a super corner case to hit. ** Changed in: libreoffice (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1905322 Title: LibreOffice crashes under load. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1905322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs