This looks specific to the GTK3 integration plugin. Uninstalling libreoffice-gtk3 and installing libreoffice-gtk2 fixes the issue.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1633054 Title: Copy-paste between two LibreOffice windows does not work with Russian locale To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1633054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs