Agreed, this does seem to be somewhat Ubuntu (and indeed perhaps Mutter) related, and not specific to LibreOffice.
I tried the exact same version of LibreOffice (libreoffice-6.3.3.2-snap1) on Debian Buster and Ubuntu 19.10, and found that while reproducible on Ubuntu, it is not on Debian (see attached screencasts). Ubuntu Mutter Version: 3.34.1-1ubuntu1 Debian Mutter Version: 3.34.1+git20191107-1 ** Attachment added: "1852183.zip" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1852183/+attachment/5304794/+files/1852183.zip -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1852183 Title: copy/paste (clipboard) is broken in Ubuntu 19.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1852183/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs