They have been replaced by exotic fonts like Waree(!??). In the font name box appears the message “36 days ago” and the font name (e.g. Thick BRK). If I hover over the font name box I get the message "Font Name. The current font is not available and will be replaced.” What to do?
Read these guidelines and ask a good question. In particular:
- what is your operating system;
- what are the fonts that disappeared (LibreOffice does not generally handle fonts, it is a matter of the operating system).