That's weird. Do you think that the VM might affect this behavior? I just installed latest 17.10 build and Libreoffice 5.4 from debs in Virtualbox and the issue seems gone
** Attachment added: "libreoffice5.4closebutton.png" https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1704745/+attachment/4940724/+files/libreoffice5.4closebutton.png -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ubuntu-themes in Ubuntu. https://bugs.launchpad.net/bugs/1704745 Title: Ambiance light-themes - LibreOffice has a white square top right Status in Ubuntu theme: In Progress Status in ubuntu-themes package in Ubuntu: In Progress Bug description: In LibreOffice, there's a white square that appears in the top right. It's a CSS problem. You could check how the guys from Adapta and United-Gnome managed to solve it. I posted the same issue at the Github of United-Gnome theme : https://github.com/godlyranchdressing/United-GNOME/issues/135 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-themes/+bug/1704745/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp