> Sorry, I don't understand why installing it from .deb should change the behavior
Me neither. :-) But you said that you had no problem with the one from deb. Again, please take a look at the answer I got from the guy who makes the United theme and how he fixed it : "I wrote a very specific rule that hopefully only fixes this issue in LibreOffice" https://github.com/godlyranchdressing/United-GNOME/issues/135 Thanks. ** Bug watch added: github.com/godlyranchdressing/United-GNOME/issues #135 https://github.com/godlyranchdressing/United-GNOME/issues/135 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1704745 Title: Ambiance light-themes - LibreOffice has a white square top right To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-themes/+bug/1704745/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs