When you open an odt that contains a font that isn’t present it looks like Writer italicizes the font name in the font menu to indicate that it isn’t installed. That is no where near intuitive enough. I believe there needs to be some popup or tool-tip to tell you that you are trying to view a document that contains a font you do not have installed. Something to indicate that you are viewing an approximation of the document. Sadly this user spent 4-5 hours trying older versions, different machines, reinstalling, in order to recover formatting on a document. If it had been more obvious that the font that LibreOffice was trying to display didn't exist then it would have been a trivial fix.
Steps to Reproduce:
1.Open a document that was written with a font that is not installed
2.View the font listed in the fonts section as if that is the font being displayed - it is italicized to indicate it isn't installed (inadequate)
3.Install missing font.
User Profile Reset: No
OpenGL enabled: Yes
This is a suggestion, not a bug. I was referred to file a report after posting on the ask.libreoffice.org forum.
for an idea of where the project may go see the UX-Design blog https://design.blog.documentfoundation.org/2016/10/21/dealing-with-missing-fonts/
*** This bug has been marked as a duplicate of bug 96872 ***