Hello, after strace on Libreoffice, I've found the problem in #6 and solved the issue by clean remove my previous installed Libreoffice beta packages.
After that I find the original bug can reproduce on gnome classic without effects as well. I'm not sure whether my previous description in #0 regarding "LO3.4.4 on gnome classic without effects" is reliable now... -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/966046 Title: Libreoffice startup (soffice) GUI glitch: side bars are not refreshed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/966046/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

