Can you observe the issue yourself with a similar setup? Where are the files being open located? Is it on a USB stick? If so and if the stick is mounted read-only, that explains why files can't be edited. Note that in that case libreoffice should display a ribbon that informs the user that the file has been opened in read-only mode, and that it cannot be edited.
What happens if the file is first copied onto the home folder of the guest session, and then opened? ** Changed in: libreoffice (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769757 Title: Can't edit Microsoft .docx/ .doc within Libreoffice To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1769757/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs